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<html>
<head>
<meta charset="UTF-8" />
<title>html第一课</title>
</head>
<body>
<h1>标题1</h1>
<h2>标题2</h2>
<h3>标题3</h3>
<h4>标题4</h4>
<h5>标题5</h5>
<h6>标题6</h6>
<a href="https://youzan.github.io/vant/#/zh-CN/swipe" target="_blank">超链接</a>
<img src="https://www.baidu.com/img/PCtm_d9c8750bed0b3c7d089fa7d55720d6cf.png" alt="图片无法加载时候的提示">
<ul>
<li>
第一章
<ul>
<li>第一章html</li>
<li>第一章html1</li>
<li>第一章html2</li>
</ul>
</li>
<li>无序列表2</li>
<li>无序列表3</li>
<li>无序列表4</li>
</ul>
<ol>
<li>有序列表1</li>
<li>有序列表2</li>
<li>有序列表3</li>
<li>有序列表4</li>
</ol>
<input type="text" disabled placeholder="请输入账户">
<input type="password" placeholder="请输入密码">
<input type="number" placeholder="请输入手机号">
<input type="color">
多选
<input type="checkbox">
<input type="checkbox">
<input type="checkbox">
<input type="checkbox">
<input type="checkbox">
单选
<input type="radio" name="test1">
<input type="radio" name="test1">
<input type="radio" name="test2">
<input type="radio" name="test2">
<input type="range">
<input type="button" value="登录">
<input type="submit" value="登录">
<button>登录</button>
<input type="date" value="登录">
<input type="datetime" >
<input type="file" name="" id="">
<hr>
<h2>用户登录</h2>
<form method="GET" action="http://127.0.0.1/user.php">
<input type="text" name="username" placeholder="请输入账户">
<input type="password" name="userpwd" placeholder="请输入密码">
<input type="number" name="userphone" placeholder="请输入手机号">
<input type="submit" name="" value="登录">
</form>
<select name="" id="">
<option value="">请选择你的爱好</option>
<option value="">编程</option>
<option value="">看电影</option>
<option value="">运动</option>
</select>
<textarea name="" id="" cols="30" rows="10" placeholder="请输入留言"></textarea>
<pre>
var a = 0;
function myFunction(){
a++;
document.getElementById("demo").innerHTML = a;
}
</pre>
<p>
<strong>用于</strong><small>内容</small> 加载 <big>过程</big><del>哈哈</del>
<sup></sup> 占位 <sub>图形</sub>
通过 title 属性 <i>显示标题占位图</i>,通过 row 属性配置占位段落行数。
</p>
<span>11111</span>
<div>22222222</div>
<table>
<tr>
<th>价格</th>
<th>销量</th>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
</table>
</body>
</html>

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Git:
代码版本控制
仓库:
远程仓库
本地仓库
项目开发阶段
开发阶段
测试阶段
正式阶段(用户)
web 界面
github 全球最大的同性交友网站
gitlab 免费的
gitee hahah
我是后端修改的文件
1暂存
2设置备注
3拉取
4推送
我是前端
我是后端
123
哈哈哈
1234
测试顶顶顶
青蛙打网球
12345
前端:
全栈 开发语言
web级开发
前端 htmlcssjs
后端 javaphpnodejs + typescriptgopython
服务器&运维 linux k8s服务器集群自动化分布式
dba 数据 数据安全,网络安全
运营
html 写布局和结构
css 写样式
js 写特效实现功能实现后端app开发桌面开发
html 标签:
作用:实现各种布局的排列
块级标签 p div ul ol,li,h1~h6
可以设置宽高的
行内标签 a,i,del,img,input
不可以设置宽高的
div是用来布局的
meta
ul, ol 一般用于重复性的布局
路径:
绝对路径 /
C:\Users\bmy\Desktop\wuxingyang\每天课程\2021-05-25\笔记.txt
相对路径 ./ 当前路径 ../ 返回上一层
每天课程\2021-05-25\笔记.txt

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>结构练习</title>
</head>
<body>
<div class="header">
<div class="header_logo">
<img src="" alt="">
<input type="text">
</div>
<div class="header_meun">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</div>
<div class="content">
<div class="left">
<div class="title">HTML 参考手册</div>
<ul>
<li>HTML 标签列表(功能排序)</li>
<li>HTML 标签列表(功能排序)</li>
<li>HTML 标签列表(功能排序)</li>
</ul>
</div>
<div class="center">
<h1>wwww</h1>
<h2>wdqdwqdwqd</h2>
<table>
<tr>
<th>价格</th>
<th>销量</th>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
<tr>
<td>11元</td>
<td>1000件</td>
</tr>
</table>
</div>
<div class="right">
<div class="title">HTML 参考手册</div>
<ul>
<li>HTML 标签列表(功能排序)</li>
<li>HTML 标签列表(功能排序)</li>
<li>HTML 标签列表(功能排序)</li>
</ul>
</div>
</div>
<div class="footer">
<div class="footer_list"></div>
<div class="footer_copyright"></div>
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>box</title>
<style>
body {
margin: 0;
}
.box {
width: 200px;
height: 200px;
background: red;
/* border: 1px solid #000; */
border-left: 10px solid green;
border-right: 10px solid blue;
border-top: 10px solid yellow;
border-bottom: 10px solid #000;
margin: 10px;
/* margin: 10px; 四个方向 同时设置一样的边距 */
/* margin: 10px 20px; 上下 表示左右 */
/* margin: 10px 20px 30px; 上 左右 下 */
/* margin: 10px 20px 30px 40px; 上 右 下 左*/
/* margin-left: 10px; */
/* margin-right: 10px; */
/* margin-top: 10px; */
/* margin-bottom: 10px; */
padding: 10px;
}
</style>
</head>
<body>
<div class="box">
你好
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>display</title>
<style>
/*清除标签的默认样式*/
body,
ul {
margin: 0;
}
li {
list-style: none;
}
.box_1 {
width: 200px;
height: 200px;
background: red;
display: inline-block;
}
.box_2 {
width: 200px;
height: 200px;
background: blue;
display: inline-block;
}
</style>
</head>
<body>
<div class="box_1">div标签</div>
<a href="" class="box_2">a标签</a>
<a href="" class="box_2">a标签</a>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>float</title>
<style>
/*清除标签的默认样式*/
body,ul{
margin: 0;
}
li {
list-style: none;
}
.box_1 {
width: 200px;
height: 200px;
background: red;
}
.box_2 {
width: 200px;
height: 200px;
background: green;
}
.left {
float: left;
}
.box_3 {
background: blue;
color: #fff;
clear: both;
}
.box_4 {
width: 100px;
height: 100px;
background: green;
}
.menu {
overflow: hidden;
}
.menu li {
float: left;
}
</style>
</head>
<body>
<div class="box_1 left"></div>
<div class="box_2 left"></div>
<div class="box_3">dddd</div>
<ul class="menu">
<li>测试1</li>
<li>测试2</li>
<li>测试3</li>
<li>测试4</li>
<li>测试5</li>
<li>测试6</li>
</ul>
<div class="box_4"></div>
<div class="test">
<h2>11</h2>
<h2>11</h2>
</div>
</body>
</html>

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.one {
color: blue !important;
}
.one {
color: red;
}
.two {
color: yellow;
}
.three {
color: green;
}
#test {
color: palevioletred;
}
#test {
color: teal;
}
.meun {
}
.meun ul li,
.logo h1{
color: rebeccapurple;
}
.gghh:hover {
color: green;
}
.username:focus {
background: yellow;
width: 300px;
}
.be::before {
content: "测试1 ";
}
.be::after {
content: " 测试2";
}
/* .koko li:first-child {
color: red;
}
.koko li:last-child {
color: red;
} */
.koko li:nth-child(4n) {
color: red;
}
.gl::selection {
background: yellow;
color: red;
}
.login input[placeholder="用户名"] {
background: blue;
}
.login input[placeholder="验证码"] {
background: green;
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>css第一课</title>
<link rel="stylesheet" href="./index.css">
</head>
<body>
<div class="login">
<input type="text" placeholder="用户名">
<input type="password" placeholder="密码">
<input type="number" placeholder="手机号">
<input type="text" placeholder="验证码">
</div>
<p class="gl">测试测试测hi</p>
<ul class="koko">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li>10</li>
</ul>
<input class="username" type="text" placeholder="请输入名称">
<h3 class="be">before and after</h3>
<!-- <p style="color: red;">测试的P标签</p> -->
<p class="one">测试的P标签1</p>
<p class="two">测试的P标签2</p>
<p class="three">测试的P标签3</p>
<div id="test">id选择器</div>
<div class="header">
<div class="logo">
<h1>2222</h1>
</div>
<div class="meun">
<ul>
<li>1</li>
<li>2</li>
</ul>
</div>
</div>
<div class="gghh">鼠标悬浮</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>水平和垂直居中</title>
<style>
.box {
width: 200px;
height: 200px;
background: red;
text-align: center;
line-height: 200px;
}
</style>
</head>
<body>
<div class="box">
你好
</div>
</body>
</html>

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css 做美化的(层叠样式表)
写css三种方式
1内联写法
2: 内部写法
css 选择器:
标签选择器
作用:一般用于清除标签的默认样式
class选择器 .
class="名字"
id选择器不常用 #
id="名字"
区别:
1id使用的时候不要出现重复全局只有一次
*(通配符)选择器
作用:一般用于清除标签的默认样式
伪类选择器
hover
before after 用于绘制图标1像素的线条
:first-child
:last-child
:nth-child
选择器 可以合写
空格 表示嵌套关系
+ 表示同级关系
> 表示嵌套关系
css 优先级
3外链
盒子模型
margin 外边距
padding 内边距
border 边框
content 内容
盒子模型的宽高计算规则:
实际宽高(肉眼看到的) = 你设置的content 宽高 + padding 和 border
box-sizing: border-box;
改变盒子模型的计算规则:
你设置的content 宽高 = padding 和 border + content (适当减小)
浮动
目的:让块元素排在一行
float: left, right
清除浮动
clear: both;
父元素高度怎么来的?
1大部分情况下是被子元素撑开
2你自己设置的height
问题:
如果父元素中的子元素设置了浮动,那么父元素将没有高度 0
如何解决:
1手写高度 height 父元素
2清除浮动 clear: both; 父元素 下面的那个元素
3overflow: hidden; 父元素
display实现块标签和行标签的相互转换
inline 转换为行 可以放在一行,不能设置宽高
block 转换为块 不可以放在一行,可以设置宽高
inline-block 转换行内块标签 可以放在一行,可以设置宽高
font-size: 0
水平居中:
text-align 块div中内容的对齐方式
padding-top
margin: 0 auto; 让块div在其他div中居中
垂直对齐:
line-height 设置单行文字的垂直对齐(数值应该是当前元素的高度)
padding-top

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>定位</title>
<style>
body {
margin: 0;
height: 3000px;
}
.box {
width: 200px;
height: 200px;
border: 1px solid #000;
box-sizing: border-box;
float: left;
}
.box_1 {
background: rebeccapurple;
position: fixed;
bottom: 0;
right: 0;
}
.box_2 {
background: red;
position: relative;
left: 63px;
top: 31px;
}
.box_3 {
background: green;
}
.box_4 {
background: yellow;
position: relative;
left: -183px;
top: 74px;
}
.box_5 {
background: palevioletred;
}
.box_4_1 {
width: 100px;
height: 100px;
background: peachpuff;
border: 1px solid #000;
box-sizing: border-box;
position: absolute;
left: 13px;
top: 145px;
}
</style>
</head>
<body>
<div class="box box_1"></div>
<div class="box box_2"></div>
<div class="box box_3"></div>
<div class="box box_4">
<div class="box_4_1"></div>
</div>
<div class="box box_5"></div>
</body>
</html>

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定位 position
为了实现更加灵活和自由的布局
left,right,top,bottom
z-index 调整z轴的漂浮等级
1相对定位 relative
当元素被设置相对定位后,它原本位置没有被删除,脱离文档流了
定位参考对象:
是他原本的位置
2绝对定位 absolute
当元素被设置绝对定位后,它原本位置被被删除,脱离文档流了
定位参考对象:
他的父元素如果没有设置定位
参考body边框来定位
他的父元素如果设置了定位
定位参考对象就是父元素的位置
3固定定位 fixed
当元素被设置固定定位后,它原本位置被被删除,脱离文档流了
定位参考对象:就是浏览器的边框

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>keyframes</title>
<style>
* {
margin: 0;
padding: 0;
}
.box {
width: 200px;
height: 200px;
background: red;
animation: test 2s ease infinite alternate;
}
@keyframes test {
0% {
width: 200px;
height: 200px;
background: red;
}
25% {
width: 250px;
height: 250px;
background: yellow;
}
50% {
width: 300px;
height: 300px;
background: green;
}
100% {
width: 350px;
height: 350px;
background: blue;
}
}
</style>
</head>
<body>
<div class="box">
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>media</title>
<style>
* {
margin: 0;
padding: 0;
}
.center div {
float: left;
height: 100%;
}
.center {
overflow: hidden;
width: 1200px;
margin: 0 auto;
height: 600px;
}
.left {
width: 200px;
background: red;
}
.content {
width: 800px;
background: #000;
}
.right {
width: 200px;
background: blue;
}
@media screen and (max-width: 900px) {
.right {
display: none;
}
}
@media screen and (max-width: 650px) {
.right {
display: none;
}
.left {
display: none;
}
}
</style>
</head>
<body>
<div class="center">
<div class="left"></div>
<div class="content"></div>
<div class="right"></div>
</div>
</body>
</html>

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translate(x,y) 让元素在X,Y轴平移
rotate 让元素按照中心轴旋转
scale(width,height) 让元素放大缩小
media 媒体查询 (响应式):根据访问设备的屏幕大小,动态显示合适的布局给用户看
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>flex</title>
<style>
* {
margin: 0;
padding: 0;
list-style: none;
}
a {
text-decoration: none;
}
ul {
display: flex;
height: 40px;
background: #8d8d8d;
align-items: center;
justify-content: space-around;
}
li {
width: 20%;
text-align: center;
}
</style>
</head>
<body>
<ul>
<li>测试文字</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li>10</li>
</ul>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>rem</title>
<script>
window.onload = function () {
getRem(750, 100)
};
window.onresize = function () {
getRem(750, 100)
};
function getRem(pwidth, prem) {
var html = document.getElementsByTagName("html")[0];
var oWidth = document.body.clientWidth || document.documentElement.clientWidth;
html.style.fontSize = oWidth / pwidth * prem + "px";
}
</script>
<style>
* {
margin: 0;
padding: 0;
}
.box {
width: 2.5rem;
height: 2.5rem;
}
.main .box {
float: left;
}
.box_1 {
background: red;
}
.box_2 {
background: yellow;
}
.box_3 {
background: green;
}
</style>
</head>
<body>
<div class="main">
<div class="box box_1"></div>
<div class="box box_2"></div>
<div class="box box_3"></div>
</div>
</body>
</html>

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display: flex 开启弹性盒子
弹性盒子
作用:快速布局,各种对齐,各种排列
12个属性
6个应用在父元素上
align-items 只有一行元素的时候让子元素在父容器的Y轴中对齐 center
align-content 多行元素的时候让多个子元素在父容器的Y轴中对齐 center
justify-content 让子元素在父容器的X轴中对齐 space-around
flex-direction 改变元素的排列方向 row(横着放) column竖着放
flex-wrap wrap 一行排不下的时候,自动换行
flex-flow flex-direction和flex-wrap简写
6个应用在子元素上
order 设置元素顺序,数值越小越靠前
flex-grow 通过设置比例的方式,改变元素所占空间比
flex-shrink: 0; 设置元素的缩小比例0 表示不要缩小
flex-basis 设置元素的宽度
flex 是flex-grow, flex-shrink 和 flex-basis
一般都是写 flex: 数值 一个参数,表示设置 flex-grow
align-self 允许单个元素设置不同的对齐方式
rem
尺寸的单位,他可以动态的改变
rem 计算规则
10rem * 16px(html 上默认的font-size的数值) = 160px
font-size 改变的方式:
1css 媒体查询 media
2js 来计算

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>饿了么我的</title>
<link rel="stylesheet" href="http://at.alicdn.com/t/font_2576965_u8lblew2pc.css">
<style>
* {
margin: 0;
padding: 0;
list-style: none;
text-decoration: none;
}
body {
background-color: #f5f5f5;
}
.footer {
position: fixed;
bottom: 0;
width: 100%;
left: 0;
right: 0;
height: 50px;
display: flex;
justify-content: space-around;
align-items: center;
border-top: 1px solid #d0cece;
background: #fff;
}
.footer li {
text-align: center;
}
.footer li p {
font-size: 12px;
color: #8e8e93;
}
.user_info {
background: linear-gradient(90deg, #0af, #0085ff);
height: 110px;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 15px;
}
.info_img {
display: flex;
align-items: center;
}
.info_img img {
width: 60px;
border-radius: 100%;
margin-right: 18px;
}
.info_name {}
.info_name h3 {
color: #fff;
}
.info_name p {
color: #fff;
font-size: 12px;
}
.user_info i {
color: #fff;
}
.active {
display: flex;
height: 83.5px;
background: #fff;
}
.active li {
width: 50%;
height: 100%;
display: flex;
flex-direction: column;
justify-content: center;
text-align: center;
border-right: 1px solid #ddd;
}
.active li:last-child {
border-right: none;
}
.active li i {
font-size: 24px;
}
.active li p {
font-size: 12px;
font-weight: 700;
color: #666
}
.menu {}
.menu li {
display: flex;
justify-content: space-between;
height: 45px;
align-items: center;
padding: 0 15px;
margin-top: 10px;
background: #fff;
}
.menu .icon_left {
display: flex;
align-items: center;
}
.menu .icon_left i {}
.menu .icon_left span {
font-size: 14px;
color: #333;
margin-left: 8px;
}
.menu .icon-zhankai-copy {
color: #8e8e93;
}
</style>
</head>
<body>
<div class="content">
<div class="user_info">
<div class="info_img">
<img src="./ele.png" alt="">
<div class="info_name">
<h3>登录/注册</h3>
<p>登录后享受更多特权</p>
</div>
</div>
<i class=" iconfont icon-zhankai-copy"></i>
</div>
<ul class="active">
<li>
<i class="iconfont icon-gouwuchekong"></i>
<p>红包</p>
</li>
<li>
<i class="iconfont icon-gouwuchekong"></i>
<p>金币</p>
</li>
</ul>
<ul class="menu">
<li>
<div class="icon_left">
<i class="iconfont icon-gouwuchekong"></i>
<span>我的地址</span>
</div>
<i class=" iconfont icon-zhankai-copy"></i>
</li>
<li>
<div class="icon_left">
<i class="iconfont icon-gouwuchekong"></i>
<span>我的地址</span>
</div>
<i class=" iconfont icon-zhankai-copy"></i>
</li>
<li>
<div class="icon_left">
<i class="iconfont icon-gouwuchekong"></i>
<span>我的地址</span>
</div>
<i class=" iconfont icon-zhankai-copy"></i>
</li>
</ul>
</div>
<ul class="footer">
<li>
<i class="iconfont icon-pinglun"></i>
<p>首页</p>
</li>
<li>
<i class="iconfont icon-pinglun"></i>
<p>订单</p>
</li>
<li>
<i class="iconfont icon-pinglun"></i>
<p>我的</p>
</li>
</ul>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
</body>
<script>
// 变量:在计算机中存储一个可以被改变的数据
// 常量:在计算机中存储一个不可以被改变的数据
// 系统关键字
// var 变量名 = 变量值
// const 常量名 = 常量值
// 变量名(常量名) 定义的时候需要遵循一套规范
// 变量名(常量名)不可以用数字开头
// 变量名(常量名)不可以用特殊符号 ( _ $ )
// 变量名(常量名)区分大小写
// 变量名(常量名)定义的时候需要尽量遵守驼峰命名法
// 变量名 建议使用字母开头
// var a = 10, b = 20, c = 100;
// console.log(a);
// 留坑 数据类型
// 对象(Object)、数组(Array)、函数(Function)。
// 字符串String凡是用 "" '' 包裹的就是字符串,一般保存中文信息
// var a = "刘兵";
// console.log(a);
// 数字(Number)、 0 ~9 组成的就是数字类型
// var b = 2333
// console.log(b);
// 布尔(Boolean)、 真true 1false 0一般用于判断
// var c = false
// console.log(c);
// var d ;
// console.log(d);
// 对空Null、表示不存在找不到的情况
// var e = null;
// console.log(e);
// 未定义Undefined 定义变量未赋值就是 Undefined
// var f = undefined;
// console.log(f);
// var ddd = Symbol(1);
// var ccc = Symbol(1)
// console.log(ddd == ccc);
// 运算符 + - * / %
// ++ 让变量自增1
// ++变量 先让变量+1然后使用变量
// 变量++ 先使用变量,使用完成后再+1
// -- 让变量自减1
// var a = 1, b = 2, c = 3;
// console.log(
// (++a + (--a * c++) - false + (--c+a) ) + ( (b*a--) + a )
// );
// console.log(
// (--a + b - b-- + (b-- - (++a)) ) + (c-- + a++)
// );
// console.log(
// (--a + b - b-- + (b-- - (++a)) ) + (c-- + a++)
// );
// += -= *= /+ %=
// var a = "4", b = 4;
// console.log(a+=b); // a = a + b
// console.log( a === b);
// + 两个功能
// 数字运算 + 两边都是数字才可以运算
// 拼接字符串
// = 赋值
// == 判断变量数值是否相等
// === 强等于 绝对等于 判断变量数值是否相等 并且 判断变量的类型是否相等
// 比较运算符
// && and 条件表达式两边必须都为true才返回true否则就是false
// || or 条件表达式两边只要有一个为tre就返回true
// ! 取反 对结果进行取反
// console.log(a != b);
// key: value
// object 可以存储任意的数据类型
// var a = new Object();
// a.name = "刘兵"
// a.age = 18
// a.isLike = false
// var a = new Object({
// name: '11',
// age: 18
// })
var a = {
name: '刘兵',
age: 18
}
for (const i in a) {
console.log(a[i]);
}
// object 一种数据类型,上面说过了,
// 还有一种是编程中的一种抽象概念 类似java中的 class
// 电脑
var diannao = {
price: '19800元',
color: '#000',
size: '15寸',
cpu: 'I7处理器',
start () {
console.log('可以开机');
},
stop () {
console.log('可以关机');
}
}
</script>
</html>

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console.log("输入2");

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>循环语句</title>
</head>
<body>
</body>
<script>
// for for of for in foreach filter
// while
// var sum = 0
// for (var i = 1; i<=100; i++) {
// sum+=i
// }
// console.log(sum);
// for (;;) {
// console.log("1111");
// }
// while
// var sum = 0, i = 1;
// while (i <= 100) {
// sum+=i
// i++
// }
// console.log(sum);
// var a = 1;
// do {
// console.log("1111");
// } while (a > 3);
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>数组</title>
</head>
<body>
</body>
<script>
// 作用: 都是用来存储大量的数据
// object key-value 类似css
// {
// key: value
// }
// array 下标(编号,学号)
// [
// '刘兵','张三','李四'
// ]
// var a = new Array();
// a[0] = "刘兵"
// a[1] = "张三"
// a[2] = "李四"
// var a = new Array("刘兵","张三","李四");
// json 数据格式
// var a = [
// "刘兵",
// [1,2,3],
// "李四",
// {
// age: 1
// }
// ]
var data = [
{
id: 1, name: 'name1'
},
{
id: 2, name: 'name2'
},
{
id: 3, name: 'name3'
}
];
for (var i = 0; i< data.length; i++) {
console.log(data[i].name);
}
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>条件语句</title>
</head>
<body>
</body>
<script>
// if (判断条件) {
// }
// var a = true;
// if (a) {
// console.log("出去吃饭");
// } else {
// console.log("在家吃饭");
// }
// if (a) console.log("出去吃饭");
// else console.log("在家吃饭");
// 三元(目)运算
// a ? console.log("出去吃饭") : console.log("在家吃饭")
// var cj = 99999;
// if ( cj < 60 ) {
// console.log("不及格");
// } else if ( 60 <= cj && cj <= 70 ) {
// console.log("一般");
// } else if ( 70 < cj && cj <= 80 ) {
// console.log("普通");
// } else if ( 80 < cj && cj <= 90 ) {
// console.log("优秀");
// } else if ( 90 < cj && cj <= 100 ) {
// console.log("学霸");
// } else {
// console.log("分数错误最高100分");
// }
// var name = "bmy1", pwd = "123"
// if (name == "bmy") {
// if (pwd == "123") {
// console.log("用户名和密码都正确,可以登录");
// } else {
// console.log("密码错误");
// }
// } else {
// console.log("用户名错误");
// }
// if (name == "bmy" && pwd == "123") {
// console.log("用户名和密码都正确,可以登录");
// } else {
// console.log("用户名或密码错误,请检查");
// }
// switch 一个变量有多种数值的场景
var type = 1;
switch (type) {
case 1:
console.log("1111");
break;
case 2:
console.log("2222");
break;
default:
console.log("都不相等");
break;
}
</script>
</html>

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htmlcssjs
js主要用来操作htmlcss实现各种网页的特效交互或者功能
js
手机Apph5web桌面端写后端操作系统
js (es 5)
dom使用js控制网页上的html和css
bom使用js控制用户的浏览器
ecmscript 6 es6 高版本的js语法
预习:
1: JavaScript 事件 https://www.runoob.com/js/js-events.html
2: 方法 https://www.runoob.com/js/js-functions.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>event 事件</title>
</head>
<body>
<div class="test">
<p>你好1</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
<p>你好2</p>
</div>
<button>点我</button>
</body>
<script>
// 事件用户在浏览器基本上干的所有事情都是js的事件
// 事件三要素组成:事件源 事件类型 事件处理函数
// 第一种绑定事件的方式
// document.querySelector("button").onclick = function (e) {
// console.log(document.querySelector(".test").children);
// }
// 网页的标签会在js中被转化为对象进行存储
// 这个对象叫什么虚拟dom
// 虚拟dom转换成真实的dom
// var p = document.querySelectorAll(".test p");
// console.log(p)
// p.forEach(function (v) {
// v.onclick = function () {
// console.log(v)
// }
// })
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>js 方法(函数)</title>
</head>
<body>
</body>
<script>
// 方法 函数 function
// 作用?:实现重复代码的封装
// 无参数的方法
// 1 先定义
// function dddd () {
// console.log("ddddd");
// }
// // 2 使用
// dddd()
// // 匿名方法
// var a = function () {
// console.log("a方法");
// }
// a()
// 方法参数的传递
// function zhuangxiu () {
// console.log();
// console.log(arguments[0],arguments[1], ": 拿到钱帮你装修");
// return "我装修好了,你可以入住了"
// }
// var my = zhuangxiu(50000,10000)
// console.log(my);
// 局部作用域
// 全局作用域
// function GetA() {
// var a = 2;
// console.log(a); // 2
// }
// GetA()
// console.log(a); // 1
// var a = function () {
// console.log("a");
// }
// var b = a;
// b()
// 回调
// 回调的作用,解决异步返回值问题
// 同步 & 异步
// var a = function (status) {
// var test = "哈哈哈哈"
// status(test)
// }
// a( function(res) {
// console.log(res);
// } )
// function a ( callback ) {
// var test;
// setTimeout(function() {
// test = "测试";
// callback(test)
// // console.log(test);
// },3000)
// // return test;
// }
// a( function(r) {
// console.log(r);
// } );
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body,ul,li,p {
margin: 0;
padding: 0;
list-style: none;
}
.tabs_title {
display: flex;
}
.tabs_title li {
margin-right: 10px;
}
.tabs_content li {
display: none;
}
.content_active {
display: block !important;
}
.title_active {
color: red;
}
</style>
</head>
<body>
<ul class="tabs_title">
<li class="title_active">公告</li>
<li>规则</li>
<li>安全</li>
<li>公益</li>
</ul>
<ul class="tabs_content">
<li class="content_active">公告的内容</li>
<li>规则的内容</li>
<li>安全的内容</li>
<li>公益的内容</li>
</ul>
</body>
<script>
// 第一步为标题的所有li标签绑定点击事件
// 第二步为点击的li加上激活类名并删除其他li上的类名
// 获取 tabs_title 里面的所有li标签
var TitleLi = document.querySelectorAll(".tabs_title li")
var ContentLi = document.querySelectorAll(".tabs_content li")
// 遍历所有li标签
TitleLi.forEach(function (v,i) {
// 为每个li标签绑定点击事件
v.onclick = function () {
// 清除所有li标签上的类名
TitleLi.forEach(function (item,index) {
item.className = ""
ContentLi[index].className = ""
})
// 给你点击的那个li加类名
v.className = "title_active"
ContentLi[i].className = "content_active"
}
})
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>tabs_v2</title>
<style>
body,ul,li,p {
margin: 0;
padding: 0;
list-style: none;
}
.tabs_title {
display: flex;
}
.tabs_title li {
margin-right: 10px;
}
.tabs_content li {
display: none;
}
.content_active {
display: block !important;
}
.title_active {
color: red;
}
</style>
</head>
<body>
<ul class="tabs_title">
</ul>
<ul class="tabs_content">
</ul>
</body>
<script>
var data = [
{
title: '公告',
content: [
{ text: '公告的新闻1' },
{ text: '公告的新闻2' },
{ text: '公告的新闻3' },
]
},
{
title: '规则',
content: [
{ text: '规则的新闻1' },
{ text: '规则的新闻2' }
]
},
{
title: '安全',
content: [
{ text: '安全的新闻1' },
{ text: '安全的新闻2' },
{ text: '安全的新闻3' },
{ text: '安全的新闻4' },
]
},
{
title: '公益',
content: [
{ text: '公益的新闻1' },
{ text: '公益的新闻2' },
{ text: '公益的新闻3' },
{ text: '公益的新闻4' },
{ text: '公益的新闻5' },
]
},
{
title: '军事',
content: [
{ text: '军事的新闻1' },
{ text: '军事的新闻2' },
{ text: '军事的新闻3' },
{ text: '军事的新闻4' },
{ text: '军事的新闻5' },
]
}
];
var currentIndex = 0;
function RenderTitle() {
// var html = ""
// data.forEach(function (v,i) {
// console.log(v)
// html += `<li class="${i == 0 ? 'title_active' : '' }">${v.title}</li>`
// })
// console.log(html)
//
// document.querySelector(".tabs_title").innerHTML = html
data.forEach(function (v,i) {
document.querySelector(".tabs_title").innerHTML
+= `<li class="${i == 0 ? 'title_active' : '' }">${v.title}</li>`;
document.querySelector(".tabs_content").innerHTML
+= `<li class="${i == 0 ? 'content_active' : '' }"></li>`;
})
// 获取所有标题的li标签
var TitleLi = document.querySelectorAll(".tabs_title li");
var ContentLi = document.querySelectorAll(".tabs_content li");
// 为标题li绑定点击事件
TitleLi.forEach(function (v,i) {
v.onclick = function () {
TitleLi.forEach(function (item,index) {
item.className = ""
ContentLi[index].className = ""
})
v.className = "title_active"
ContentLi[i].className = "content_active"
currentIndex = i
RenderContent()
}
})
}
function RenderContent() {
var li = document.querySelectorAll(".tabs_content li");
li[currentIndex].innerHTML = ""
data[currentIndex].content.forEach(function (v) {
li[currentIndex].innerHTML += `<p>${v.text}</p>`
})
}
RenderTitle()
RenderContent()
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<ul>
</ul>
</body>
<script>
// function geData(res) {
// console.log(res)
// }
</script>
<!--<script src="http://127.0.0.1/list.php?name=geData"></script>-->
<script>
// // 1拿出手机
// var http = new XMLHttpRequest() // xhr
//
// // 2设置拨号方式和手机号码
// http.open("GET","http://127.0.0.1/list.php");
//
// // 3拨号
// http.send()
//
// // 4拨号的状态监听
// http.onreadystatechange = function () {
//
// if (http.readyState == 4) {
// if (http.status == 200) {
// var data = JSON.parse(http.response);
//
// data.result.forEach(v=> {
// document.querySelector("ul").innerHTML += `<li>${v.title}</li>`
// })
// } else {
// console.log("请求错误")
// }
// }
// }
</script>
</html>

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web 开发方式
1后端服务端渲染
后端工作70% 数据库,后端代码,页面渲染,数据安全,页面功能 1万
前端工作30% 写静态页面 3千~3千
优点:前端浏览器压力下,前端开发工作任务少,对搜索引擎更友好
缺点:代码冗余非常高,版本升级的时候更加困难
2前后端分离
后端工作50% 数据库,后端代码,数据安全 1万+1000
|
|
ajax
|
|
前端工作50% 写静态页面,页面功能,页面渲染 1万
ajax 官方解释
无刷新的前后端数据交互技术
request 请求
response 响应
请求方式:
GET
https://www.baidu.com/s?ie=utf-8&f=8
地址栏传参
POST
https://www.baidu.com/s
请求体(参数)里面发送的
PUT
DELETE
请求状态码:
浏览器有个同源策略(跨域)
前端http://127.0.0.1:8080/index
后端http://127.0.0.1:80/list.php
http: 80
https: 443
协议
域名
端口
绕过浏览器的安全策略(解决跨域)
1cors Access-Control-Allow-Origin 需要后端在请求头中中设置cors告诉浏览器放行我们的前端
2jsonp 把接口地址伪装成js文件地址骗过浏览器达到成功发送请求的目的拿回数据需要 + 回调函数 不是ajax请求
3服务端代理
A我的前端 ------> B别人公司的后端
A ---> C我们自己的后端
C ---> B

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const axios = require("axios");
const iconv = require("iconv-lite");
const cheerio = require("cheerio");
const fs = require("fs");
var url = "http://www.netbian.com/dongman/";
var urlArr = [];
var imgUrlArr = [];
var index = 0;
var urlIndex = 6;
for (var i = 9; i <= 136; i++) {
if (i == 1) {
urlArr.push(url);
} else {
urlArr.push(`${url}index_${i}.htm`);
}
}
async function getSiteHtml() {
console.log(`${index + 1} 页,请求地址为:`, urlArr[index]);
let res = await axios({
method: "get",
url: urlArr[index],
responseType: "arraybuffer",
headers: {
"User-Agent":
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
Cookie:
"__yjs_duid=1_b9d996b2175dc2d7535f6766d95151c11626417252241; Hm_lvt_14b14198b6e26157b7eba06b390ab763=1626417252; xygkqecookieinforecord=%2C7-23654%2C; xygkqecookieclassrecord=%2C7%2C4%2C3%2C29%2C19%2C; yjs_js_security_passport=fd52428938eab0e648019f36164ac5c0fcfcf108_1626421470_js; Hm_lpvt_14b14198b6e26157b7eba06b390ab763=1626421860",
Host: "www.netbian.com",
Accept:
"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
},
});
let $ = cheerio.load(iconv.decode(res.data, "gbk"));
jxHtml($);
}
async function jxHtml($) {
$(".list li img").each(function (i) {
var src = $(this).attr("src");
if (src.includes("small")) {
src = src.replace("small", "");
src = src.replace(src.substr(-14), ".jpg");
imgUrlArr.push(src);
}
if (src.includes("newc")) {
console.log("===========================");
console.log(`1: 系统检测到不符合规律的图片,请手动处理`);
console.log(`访问路径:${urlArr[index]}, 第: ${i} 张图`);
console.log("===========================");
}
});
downImage();
}
async function downImage() {
console.log("imgUrlArr[urlIndex] ====== ", imgUrlArr[urlIndex]);
try {
var jpgFileName = Date.now() + Math.random() + ".jpg";
var res = await axios({
method: "get",
url: imgUrlArr[urlIndex],
responseType: "stream",
});
res.data.pipe(fs.createWriteStream(`img/${jpgFileName}`));
console.log(
`当前第:${index + 1} 页,第:${urlIndex + 1} 张图:${imgUrlArr[urlIndex]}`
);
if (urlIndex <= imgUrlArr.length - 2) {
setTimeout(() => {
urlIndex += 1;
downImage();
}, 1000);
} else {
console.log("上一页结束");
urlIndex = 0;
imgUrlArr = [];
setTimeout(() => {
index += 1;
getSiteHtml();
}, 2000);
}
} catch (error) {
console.log("===========================");
console.log(`2: 系统检测到不符合规律的图片,请手动处理`);
console.log(`访问路径:${urlArr[index]}, 第: ${urlIndex} 张图`);
console.log("===========================");
setTimeout(() => {
urlIndex += 1;
downImage();
}, 1000);
}
}
getSiteHtml();

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{
"name": "nodestudy",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node pachong.js"
},
"keywords": [],
"author": "bmy",
"license": "ISC",
"dependencies": {
"axios": "^0.21.1",
"cheerio": "^1.0.0-rc.10",
"iconv-lite": "^0.6.3"
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
[v-cloak] {
display: none;
}
</style>
</head>
<body>
<div class="app" v-cloak>
<h1>{{ test }}</h1>
<a :href="url">你好</a>
<div v-html="h2html"></div>
<div v-text="h2html"></div>
<ul>
<li v-for="(v,i) in newsList" :key="i">
{{ i }} {{ v.title }}
</li>
</ul>
<div v-show="isShow">
v-show 指令学习
</div>
<div v-if="vipLeave == 1">vip1</div>
<div v-else-if="vipLeave == 2">vip2</div>
<div v-else-if="vipLeave == 3">vip3</div>
<div v-else-if="vipLeave == 4">vip4</div>
<div v-else>暂无vip</div>
<input type="text" v-model="userName" placeholder="请输入用户名">
{{ userName }}
<div v-once>{{userName}}</div>
<button @click="hello(1)">登 录</button>
<span v-pre>{{ test }}</span>
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
// vue 指令
// v-bind 将变量绑定到标签的属性上 简写 :
// v-html 将变量渲染为html
// v-text 将变量渲染为text文本
// v-for 遍历数组
// v-show 根据一个变量的true或false决定元素是否显示 只是对元素进行 display none 和 block 的设置
// v-if v-else 不符合条件的元素,不在代码里面显示,直接被删除
// v-model 获取输入框的内容
// v-on 绑定点击事件 @
var vm = new Vue({
el: ".app",
data: {
test: '你好我是vue',
url: "http://www.netbian.com/dongman/",
h2html: "<h2>我是h2</h2>",
newsList: [
{ title: '测试新闻1',id: 1 },
{ title: '测试新闻2',id: 2 },
{ title: '测试新闻3',id: 3 },
{ title: '测试新闻4',id: 4 },
{ title: '测试新闻5',id: 5 }
],
isShow: false,
vipLeave: 3,
userName: "张三"
},
methods: {
hello(a) {
console.log(a)
console.log(this.userName)
},
test2() {}
}
})
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body,ul,li {
margin: 0;
padding: 0;
}
.tabs {
width: 300px;
margin: 10% auto;
}
.title {
display: flex;
align-items: center;
height: 45px;
justify-content: space-between;
}
.title .active {
color: red;
}
.tabs_content .c_item {
display: none;
}
.tabs_content .active {
display: block !important;
}
</style>
</head>
<body>
<div class="app">
<div class="tabs">
<div class="title">
<div @click="changeTitle(i)" class="tabs_title"
:class="i == currentIndex ? 'active': '' "
v-for="(v,i) in tab">{{ v.title }}</div>
</div>
<div class="tabs_content">
<div class="c_item" :class="i == currentIndex ? 'active' : '' " v-for="(v, i) in tab">
<p v-for="item in v.content">{{ item.content }}</p>
</div>
</div>
</div>
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
new Vue({
el: '.app',
data: {
currentIndex: 0,
tab: [
{
title: '社会',
content: [
{ content: '社会的内容1' },
{ content: '社会的内容2' },
{ content: '社会的内容3' },
]
},
{
title: '军事',
content: [
{ content: '军事的内容1' },
{ content: '军事的内容2' },
{ content: '军事的内容3' },
]
},
{
title: '财经',
content: [
{ content: '财经的内容1' },
{ content: '财经的内容2' },
{ content: '财经的内容3' },
]
}
]
},
methods: {
changeTitle(i) {
this.currentIndex = i
console.log(i)
}
}
})
</script>
</html>

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vuemvvm框架
mmodelvviewvmmodelview
model 数据 ajax 数据
view 页面
vm数据和页面
mmodelvviewccontroller
model数据数据库
view页面
controller控制器
vue
版本变化
vue 2.x
vue 3.x
语法变化:
1option api 60%
2class api 10%
3commposition api 30%
1: 组件基础 https://cn.vuejs.org/v2/guide/components.html
2prop https://cn.vuejs.org/v2/guide/components-props.html
3插槽 https://cn.vuejs.org/v2/guide/components-slots.html
4过渡动画 https://cn.vuejs.org/v2/guide/transitions.html
5路由https://router.vuejs.org/zh/guide/
6混入https://cn.vuejs.org/v2/guide/mixins.html
7自定义指令 https://cn.vuejs.org/v2/guide/custom-directive.html
8过滤器 https://cn.vuejs.org/v2/guide/filters.html

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nodejs
是js运行在后端服务器上的运行环境
c++ + v8
node
npm 依赖管理工具
npm install 插件名
npm i 插件名 --save 把插件安装到正式阶段 dependencies
npm i 插件名 --save-dev 把插件安装到开发阶段 devdependencies
npm i 插件名 -g 把插件安装到系统全局
npm uninstall 插件名
nodejs 项目必须要有个配置文件
npm init -y
package.json

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div class="app">
<lb_header @send="fatherClick" :h_title="title" :gethello="test" user-name="张三">
</lb_header>
<h2>{{ title | str }}</h2>
<div v-title="title" class="ddd" ref="content">中间内容</div>
app 组件
<v-footer @main="zhongz">
<template v-slot:three>
<div class="">three</div>
</template>
<template v-slot:one="slotProps">
<li class="">{{ slotProps.data.title }}</li>
</template>
<template v-slot:two>
<div class="">two</div>
</template>
</v-footer>
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
var httpPage = {
data() {
return {
page: 1,
totalPage: 0
}
},
methods: {
bottom() {
}
}
}
// 全局组件
Vue.component('lb_header', {
// props: ['h_title'],
props: {
h_title: {
type: String,
default: '默认标题'
},
userName: {
type: String,
default: "你好"
},
gethello: {
type: String,
default: ''
}
},
template: `<h2 @click="setdd">{{ test }} {{ h_title }} {{ userName }} {{gethello}}</h2>`,
data() {
return {
test: '全局组件',
children: '孩子的数据'
}
},
methods: {
setdd() {
this.$emit('send', this.children)
}
}
})
// 局部组件
var lb_footer = {
template: `
<div>
<div>局部组件 {{ hello }} - footer</div>
<button @click="fasong">点我向兄弟传递数据</button>
<ul>
<slot :data="item" v-for="(item,index) in list" name="one"></slot>
</ul>
<slot name="two"></slot>
<slot name="three"></slot>
</div>
`,
mixins: [httpPage],
data() {
return {
hello: '你好',
list: [
{ title: "新闻1", name: '子标题1' },
{ title: "新闻2", name: '子标题2' },
{ title: "新闻3", name: '子标题3' },
]
}
},
created() {
console.log("this.page: ", this.page);
},
methods: {
fasong() {
this.$emit("main", this.hello)
}
}
}
// 父子组件之间相互可以传递数据
// 父 ---> 子 props
// 子 ---> 父 $emit
// ref refs
var vm = new Vue({
el: '.app',
data: {
title: "哈哈哈哈哈哈",
test: '',
},
beforeCreate() {
console.log(this.title);
},
created() {
console.log(this.title);
console.log(this.$refs.content);
},
mounted() {
console.log(this.$refs.content);
},
beforeUpdate() {
console.log("监听到页面发生修改了");
},
watch: {
title: function (newVal, oldVal) {
console.log("watch title === :",newVal, oldVal);
}
},
methods: {
fatherClick(res) {
console.log(res);
},
zhongz(res) {
this.test = res;
console.log(this.test);
}
},
filters: {
str(val) {
return val.substring(0,3)+"..."
}
},
computed: {
test2() {
}
},
directives: {
title (el, binding, vnode) {
document.title = binding.value
}
},
components: {
'v-footer': lb_footer
}
})
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.router-link-active {
color: red;
}
</style>
</head>
<body>
<div class="app">
<p>
<router-link to="/home">首页</router-link>
<router-link to="/type">分类</router-link>
<router-link to="/car">购物车</router-link>
<router-link to="/me">我的</router-link>
</p>
<router-view></router-view>
</div>
</body>
<script src="vue.js"></script>
<script src="vue-router.js"></script>
<script>
const Home = {
template: `<div class="Home">首页</div>`
}
const Type = {
template: `<div class="Type">分类</div>`
}
const Car = {
template: `<div class="Car">购物车</div>`
}
const Me = {
template: `<div class="Me">我的</div>`
}
const Info = {
template: `<div class="Info">详情页</div>`
}
const Login = {
template: `<div class="Login">
<button @click="login">点我登录</button>
</div>`,
methods: {
login() {
localStorage.setItem("token", "123432345")
if (this.$route.query.hasOwnProperty("from")) {
console.log(this.$route.query.from);
this.$router.push({
path: this.$route.query.from
})
} else {
this.$router.back()
}
console.log();
}
}
}
const Reg = {
template: `<div class="Reg">
注册
</div>`
}
var routes = [
{
path: '/home',
component: Home,
meta: {
isLogin: false,
title: '首页'
}
}, // 首页
{
path: '/type',
component: Type,
meta: {
isLogin: false,
title: '分类'
}
}, // 分类
{
path: '/car',
component: Car,
meta: {
isLogin: true,
title: '购物车'
}
}, // 购物车
{
path: '/me',
component: Me,
meta: {
isLogin: true,
title: '我的'
}
}, // 我的
{
path: '/info',
component: Info,
meta: {
isLogin: false,
title: '详情页'
}
}, // 详情页
{
path: '/login',
component: Login,
meta: {
isLogin: false,
title: '登录'
}
}, // 登录
{
path: '/reg',
component: Reg,
meta: {
isLogin: false,
title: '注册'
}
}, // 注册
];
const router = new VueRouter({
routes // (缩写) 相当于 routes: routes
});
router.beforeEach((to, from, next) => {
document.title = to.meta.title
// 你访问的那个页面需要登录
if (to.meta.isLogin) {
// 再次判断,你是否登录
// 登录了给你看页面
// 没登陆不给看,并且强制去登录
// 表示未登录,
if (localStorage.getItem("token") == null) {
next({
path: '/login',
query: {
from: to.path
}
})
} else {
next()
}
} else {
next()
}
})
new Vue({
el: '.app',
router,
data() {
return {
}
}
})
</script>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<h1>Hello App!</h1>
<p>
<!-- 使用 router-link 组件来导航. -->
<!-- 通过传入 `to` 属性指定链接. -->
<!-- <router-link> 默认会被渲染成一个 `<a>` 标签 -->
<router-link to="/home">首页</router-link>
<router-link to="/about">关于我</router-link>
</p>
<!-- 路由出口 -->
<!-- 路由匹配到的组件将渲染在这里 -->
<div>
<router-view></router-view>
</div>
</div>
</body>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
<script>
// 0. 如果使用模块化机制编程导入Vue和VueRouter要调用 Vue.use(VueRouter)
// 1. 定义 (路由) 组件。
// 可以从其他文件 import 进来
const Home = {
template: `<div>
<ul>
<li @click="enterInfo(item)" v-for="item in list">{{ item.title }}</li>
</ul>
</div>`,
data() {
return {
list: [
{ id: 1, title: '新闻1' },
{ id: 2, title: '新闻2' },
{ id: 3, title: '新闻3' },
]
}
},
methods: {
enterInfo(item) {
console.log(item);
this.$router.push({
name: 'info',
query: {
id: item.id
}
})
}
}
}
const About = { template: '<div>关于我</div>' }
const Info = {
template: `
<div>详情页 {{ $route.query.id }}</div>
` ,
created() {
console.log(this.$route.query);
},
beforeRouteLeave(to, from, next) {
var isLeave = confirm("你确定离开吗?")
if (isLeave) {
next()
}
}
}
// 2. 定义路由
// 每个路由应该映射一个组件。 其中"component" 可以是
// 通过 Vue.extend() 创建的组件构造器,
// 或者,只是一个组件配置对象。
// 我们晚点再讨论嵌套路由。
const routes = [
{
path: '/',
redirect: '/home'
},
{
path: '/home',
component: Home
},
{
path: '/about',
component: About,
beforeEnter: (to, from, next) => {
console.log("别人正在打算访问about页面");
next()
}
},
{
path: '/info',
name: 'info',
component: Info,
},
]
// 3. 创建 router 实例,然后传 `routes` 配置
// 你还可以传别的配置参数, 不过先这么简单着吧。
const router = new VueRouter({
routes // (缩写) 相当于 routes: routes
})
router.beforeEach((to, from, next) => {
console.log("to: ", to);
console.log("from: ", from);
next()
})
// 4. 创建和挂载根实例。
// 记得要通过 router 配置参数注入路由,
// 从而让整个应用都有路由功能
const app = new Vue({
el: '#app',
router
})
</script>
</html>

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{
"presets": [
["env", {
"modules": false,
"targets": {
"browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
}
}],
"stage-2"
],
"plugins": ["transform-vue-jsx", "transform-runtime"]
}

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root = true
[*]
charset = utf-8
indent_style = space
indent_size = 2
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true

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/build/
/config/
/dist/
/*.js

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// https://eslint.org/docs/user-guide/configuring
module.exports = {
root: true,
parserOptions: {
parser: 'babel-eslint'
},
env: {
browser: true,
},
extends: [
// https://github.com/vuejs/eslint-plugin-vue#priority-a-essential-error-prevention
// consider switching to `plugin:vue/strongly-recommended` or `plugin:vue/recommended` for stricter rules.
'plugin:vue/essential',
// https://github.com/standard/standard/blob/master/docs/RULES-en.md
'standard'
],
// required to lint *.vue files
plugins: [
'vue'
],
// add your custom rules here
rules: {
// allow async-await
'generator-star-spacing': 'off',
// allow debugger during development
'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off'
}
}

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.DS_Store
node_modules/
/dist/
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# Editor directories and files
.idea
.vscode
*.suo
*.ntvs*
*.njsproj
*.sln

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// https://github.com/michael-ciniawsky/postcss-load-config
module.exports = {
"plugins": {
"postcss-import": {},
"postcss-url": {},
// to edit target browsers: use "browserslist" field in package.json
"autoprefixer": {}
}
}

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# cygvy
> A Vue.js project
[百度](https://cn.vuejs.org/v2/guide/installation.html)
## Build Setup
``` bash
# install dependencies
npm install
# serve with hot reload at localhost:8080
npm run dev
# build for production with minification
npm run build
# build for production and view the bundle analyzer report
npm run build --report
```
For a detailed explanation on how things work, check out the [guide](http://vuejs-templates.github.io/webpack/) and [docs for vue-loader](http://vuejs.github.io/vue-loader).

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'use strict'
require('./check-versions')()
process.env.NODE_ENV = 'production'
const ora = require('ora')
const rm = require('rimraf')
const path = require('path')
const chalk = require('chalk')
const webpack = require('webpack')
const config = require('../config')
const webpackConfig = require('./webpack.prod.conf')
const spinner = ora('building for production...')
spinner.start()
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
if (err) throw err
webpack(webpackConfig, (err, stats) => {
spinner.stop()
if (err) throw err
process.stdout.write(stats.toString({
colors: true,
modules: false,
children: false, // If you are using ts-loader, setting this to true will make TypeScript errors show up during build.
chunks: false,
chunkModules: false
}) + '\n\n')
if (stats.hasErrors()) {
console.log(chalk.red(' Build failed with errors.\n'))
process.exit(1)
}
console.log(chalk.cyan(' Build complete.\n'))
console.log(chalk.yellow(
' Tip: built files are meant to be served over an HTTP server.\n' +
' Opening index.html over file:// won\'t work.\n'
))
})
})

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'use strict'
const chalk = require('chalk')
const semver = require('semver')
const packageConfig = require('../package.json')
const shell = require('shelljs')
function exec (cmd) {
return require('child_process').execSync(cmd).toString().trim()
}
const versionRequirements = [
{
name: 'node',
currentVersion: semver.clean(process.version),
versionRequirement: packageConfig.engines.node
}
]
if (shell.which('npm')) {
versionRequirements.push({
name: 'npm',
currentVersion: exec('npm --version'),
versionRequirement: packageConfig.engines.npm
})
}
module.exports = function () {
const warnings = []
for (let i = 0; i < versionRequirements.length; i++) {
const mod = versionRequirements[i]
if (!semver.satisfies(mod.currentVersion, mod.versionRequirement)) {
warnings.push(mod.name + ': ' +
chalk.red(mod.currentVersion) + ' should be ' +
chalk.green(mod.versionRequirement)
)
}
}
if (warnings.length) {
console.log('')
console.log(chalk.yellow('To use this template, you must update following to modules:'))
console.log()
for (let i = 0; i < warnings.length; i++) {
const warning = warnings[i]
console.log(' ' + warning)
}
console.log()
process.exit(1)
}
}

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'use strict'
const path = require('path')
const config = require('../config')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const packageConfig = require('../package.json')
exports.assetsPath = function (_path) {
const assetsSubDirectory = process.env.NODE_ENV === 'production'
? config.build.assetsSubDirectory
: config.dev.assetsSubDirectory
return path.posix.join(assetsSubDirectory, _path)
}
exports.cssLoaders = function (options) {
options = options || {}
const cssLoader = {
loader: 'css-loader',
options: {
sourceMap: options.sourceMap
}
}
const postcssLoader = {
loader: 'postcss-loader',
options: {
sourceMap: options.sourceMap
}
}
// generate loader string to be used with extract text plugin
function generateLoaders (loader, loaderOptions) {
const loaders = options.usePostCSS ? [cssLoader, postcssLoader] : [cssLoader]
if (loader) {
loaders.push({
loader: loader + '-loader',
options: Object.assign({}, loaderOptions, {
sourceMap: options.sourceMap
})
})
}
// Extract CSS when that option is specified
// (which is the case during production build)
if (options.extract) {
return ExtractTextPlugin.extract({
use: loaders,
fallback: 'vue-style-loader'
})
} else {
return ['vue-style-loader'].concat(loaders)
}
}
// https://vue-loader.vuejs.org/en/configurations/extract-css.html
return {
css: generateLoaders(),
postcss: generateLoaders(),
less: generateLoaders('less'),
sass: generateLoaders('sass', { indentedSyntax: true }),
scss: generateLoaders('sass'),
stylus: generateLoaders('stylus'),
styl: generateLoaders('stylus')
}
}
// Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function (options) {
const output = []
const loaders = exports.cssLoaders(options)
for (const extension in loaders) {
const loader = loaders[extension]
output.push({
test: new RegExp('\\.' + extension + '$'),
use: loader
})
}
return output
}
exports.createNotifierCallback = () => {
const notifier = require('node-notifier')
return (severity, errors) => {
if (severity !== 'error') return
const error = errors[0]
const filename = error.file && error.file.split('!').pop()
notifier.notify({
title: packageConfig.name,
message: severity + ': ' + error.name,
subtitle: filename || '',
icon: path.join(__dirname, 'logo.png')
})
}
}

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'use strict'
const utils = require('./utils')
const config = require('../config')
const isProduction = process.env.NODE_ENV === 'production'
const sourceMapEnabled = isProduction
? config.build.productionSourceMap
: config.dev.cssSourceMap
module.exports = {
loaders: utils.cssLoaders({
sourceMap: sourceMapEnabled,
extract: isProduction
}),
cssSourceMap: sourceMapEnabled,
cacheBusting: config.dev.cacheBusting,
transformToRequire: {
video: ['src', 'poster'],
source: 'src',
img: 'src',
image: 'xlink:href'
}
}

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'use strict'
const path = require('path')
const utils = require('./utils')
const config = require('../config')
const vueLoaderConfig = require('./vue-loader.conf')
function resolve (dir) {
return path.join(__dirname, '..', dir)
}
const createLintingRule = () => ({
test: /\.(js|vue)$/,
loader: 'eslint-loader',
enforce: 'pre',
include: [resolve('src'), resolve('test')],
options: {
formatter: require('eslint-friendly-formatter'),
emitWarning: !config.dev.showEslintErrorsInOverlay
}
})
module.exports = {
context: path.resolve(__dirname, '../'),
entry: {
app: './src/main.js'
},
output: {
path: config.build.assetsRoot,
filename: '[name].js',
publicPath: process.env.NODE_ENV === 'production'
? config.build.assetsPublicPath
: config.dev.assetsPublicPath
},
resolve: {
extensions: ['.js', '.vue', '.json'],
alias: {
'vue$': 'vue/dist/vue.esm.js',
'@': resolve('src'),
}
},
module: {
rules: [
...(config.dev.useEslint ? [createLintingRule()] : []),
{
test: /\.vue$/,
loader: 'vue-loader',
options: vueLoaderConfig
},
{
test: /\.js$/,
loader: 'babel-loader',
include: [resolve('src'), resolve('test'), resolve('node_modules/webpack-dev-server/client')]
},
{
test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('img/[name].[hash:7].[ext]')
}
},
{
test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('media/[name].[hash:7].[ext]')
}
},
{
test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('fonts/[name].[hash:7].[ext]')
}
}
]
},
node: {
// prevent webpack from injecting useless setImmediate polyfill because Vue
// source contains it (although only uses it if it's native).
setImmediate: false,
// prevent webpack from injecting mocks to Node native modules
// that does not make sense for the client
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty'
}
}

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'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const path = require('path')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')
const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)
const devWebpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
},
// cheap-module-eval-source-map is faster for development
devtool: config.dev.devtool,
// these devServer options should be customized in /config/index.js
devServer: {
clientLogLevel: 'warning',
historyApiFallback: {
rewrites: [
{ from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') },
],
},
hot: true,
contentBase: false, // since we use CopyWebpackPlugin.
compress: true,
host: HOST || config.dev.host,
port: PORT || config.dev.port,
open: config.dev.autoOpenBrowser,
overlay: config.dev.errorOverlay
? { warnings: false, errors: true }
: false,
publicPath: config.dev.assetsPublicPath,
proxy: config.dev.proxyTable,
quiet: true, // necessary for FriendlyErrorsPlugin
watchOptions: {
poll: config.dev.poll,
}
},
plugins: [
new webpack.DefinePlugin({
'process.env': require('../config/dev.env')
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
new webpack.NoEmitOnErrorsPlugin(),
// https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'index.html',
inject: true
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.dev.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
module.exports = new Promise((resolve, reject) => {
portfinder.basePort = process.env.PORT || config.dev.port
portfinder.getPort((err, port) => {
if (err) {
reject(err)
} else {
// publish the new Port, necessary for e2e tests
process.env.PORT = port
// add port to devServer config
devWebpackConfig.devServer.port = port
// Add FriendlyErrorsPlugin
devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
compilationSuccessInfo: {
messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
},
onErrors: config.dev.notifyOnErrors
? utils.createNotifierCallback()
: undefined
}))
resolve(devWebpackConfig)
}
})
})

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'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const env = require('../config/prod.env')
const webpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.build.productionSourceMap,
extract: true,
usePostCSS: true
})
},
devtool: config.build.productionSourceMap ? config.build.devtool : false,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath('js/[name].[chunkhash].js'),
chunkFilename: utils.assetsPath('js/[id].[chunkhash].js')
},
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
'process.env': env
}),
new UglifyJsPlugin({
uglifyOptions: {
compress: {
warnings: false
}
},
sourceMap: config.build.productionSourceMap,
parallel: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath('css/[name].[contenthash].css'),
// Setting the following option to `false` will not extract CSS from codesplit chunks.
// Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
// It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`,
// increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
allChunks: true,
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: config.build.productionSourceMap
? { safe: true, map: { inline: false } }
: { safe: true }
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: config.build.index,
template: 'index.html',
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier#options-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: 'dependency'
}),
// keep module.id stable when vendor modules does not change
new webpack.HashedModuleIdsPlugin(),
// enable scope hoisting
new webpack.optimize.ModuleConcatenationPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
minChunks (module) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, '../node_modules')
) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: 'manifest',
minChunks: Infinity
}),
// This instance extracts shared chunks from code splitted chunks and bundles them
// in a separate chunk, similar to the vendor chunk
// see: https://webpack.js.org/plugins/commons-chunk-plugin/#extra-async-commons-chunk
new webpack.optimize.CommonsChunkPlugin({
name: 'app',
async: 'vendor-async',
children: true,
minChunks: 3
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp(
'\\.(' +
config.build.productionGzipExtensions.join('|') +
')$'
),
threshold: 10240,
minRatio: 0.8
})
)
}
if (config.build.bundleAnalyzerReport) {
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig

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'use strict'
const merge = require('webpack-merge')
const prodEnv = require('./prod.env')
module.exports = merge(prodEnv, {
NODE_ENV: '"development"'
})

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'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.
const path = require('path')
module.exports = {
dev: {
// Paths
assetsSubDirectory: 'static',
assetsPublicPath: '/',
proxyTable: {},
// Various Dev Server settings
host: 'localhost', // can be overwritten by process.env.HOST
port: 1314, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
autoOpenBrowser: false,
errorOverlay: true,
notifyOnErrors: true,
poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-
// Use Eslint Loader?
// If true, your code will be linted during bundling and
// linting errors and warnings will be shown in the console.
useEslint: false,
// If true, eslint errors and warnings will also be shown in the error overlay
// in the browser.
showEslintErrorsInOverlay: false,
/**
* Source Maps
*/
// https://webpack.js.org/configuration/devtool/#development
devtool: 'cheap-module-eval-source-map',
// If you have problems debugging vue-files in devtools,
// set this to false - it *may* help
// https://vue-loader.vuejs.org/en/options.html#cachebusting
cacheBusting: true,
cssSourceMap: true
},
build: {
// Template for index.html
index: path.resolve(__dirname, '../dist/index.html'),
// Paths
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',
/**
* Source Maps
*/
productionSourceMap: true,
// https://webpack.js.org/configuration/devtool/#production
devtool: '#source-map',
// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: false,
productionGzipExtensions: ['js', 'css'],
// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
}
}

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'use strict'
module.exports = {
NODE_ENV: '"production"'
}

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>cygvy</title>
</head>
<body>
<div id="app"></div>
<!-- built files will be auto injected -->
</body>
</html>

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{
"name": "cygvy",
"version": "1.0.0",
"description": "A Vue.js project",
"author": "bmy <www.2271608011@qq.com>",
"private": true,
"scripts": {
"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
"start": "npm run dev",
"lint": "eslint --ext .js,.vue src",
"build": "node build/build.js"
},
"dependencies": {
"vue": "^2.5.2",
"vue-router": "^3.0.1"
},
"devDependencies": {
"autoprefixer": "^7.1.2",
"babel-core": "^6.22.1",
"babel-eslint": "^8.2.1",
"babel-helper-vue-jsx-merge-props": "^2.0.3",
"babel-loader": "^7.1.1",
"babel-plugin-syntax-jsx": "^6.18.0",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-plugin-transform-vue-jsx": "^3.5.0",
"babel-preset-env": "^1.3.2",
"babel-preset-stage-2": "^6.22.0",
"chalk": "^2.0.1",
"copy-webpack-plugin": "^4.0.1",
"css-loader": "^0.28.0",
"eslint": "^4.15.0",
"eslint-config-standard": "^10.2.1",
"eslint-friendly-formatter": "^3.0.0",
"eslint-loader": "^1.7.1",
"eslint-plugin-import": "^2.7.0",
"eslint-plugin-node": "^5.2.0",
"eslint-plugin-promise": "^3.4.0",
"eslint-plugin-standard": "^3.0.1",
"eslint-plugin-vue": "^4.0.0",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^1.1.4",
"friendly-errors-webpack-plugin": "^1.6.1",
"html-webpack-plugin": "^2.30.1",
"node-notifier": "^5.1.2",
"optimize-css-assets-webpack-plugin": "^3.2.0",
"ora": "^1.2.0",
"portfinder": "^1.0.13",
"postcss-import": "^11.0.0",
"postcss-loader": "^2.0.8",
"postcss-url": "^7.2.1",
"rimraf": "^2.6.0",
"semver": "^5.3.0",
"shelljs": "^0.7.6",
"uglifyjs-webpack-plugin": "^1.1.1",
"url-loader": "^0.5.8",
"vue-loader": "^13.3.0",
"vue-style-loader": "^3.0.1",
"vue-template-compiler": "^2.5.2",
"webpack": "^3.6.0",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-dev-server": "^2.9.1",
"webpack-merge": "^4.1.0"
},
"engines": {
"node": ">= 6.0.0",
"npm": ">= 3.0.0"
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
]
}

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<template>
<div id="app">
<router-link to="/">首页</router-link>
<router-link to="/about">我的</router-link>
<router-view/>
</div>
</template>
<script>
export default {
name: 'App'
}
</script>
<style>
</style>

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<template>
<div class="hello">
<h1>{{ msg }}</h1>
<h2>Essential Links</h2>
<ul>
<li>
<a
href="https://vuejs.org"
target="_blank"
>
Core Docs
</a>
</li>
<li>
<a
href="https://forum.vuejs.org"
target="_blank"
>
Forum
</a>
</li>
<li>
<a
href="https://chat.vuejs.org"
target="_blank"
>
Community Chat
</a>
</li>
<li>
<a
href="https://twitter.com/vuejs"
target="_blank"
>
Twitter
</a>
</li>
<br>
<li>
<a
href="http://vuejs-templates.github.io/webpack/"
target="_blank"
>
Docs for This Template
</a>
</li>
</ul>
<h2>Ecosystem</h2>
<ul>
<li>
<a
href="http://router.vuejs.org/"
target="_blank"
>
vue-router
</a>
</li>
<li>
<a
href="http://vuex.vuejs.org/"
target="_blank"
>
vuex
</a>
</li>
<li>
<a
href="http://vue-loader.vuejs.org/"
target="_blank"
>
vue-loader
</a>
</li>
<li>
<a
href="https://github.com/vuejs/awesome-vue"
target="_blank"
>
awesome-vue
</a>
</li>
</ul>
</div>
</template>
<script>
export default {
name: 'HelloWorld',
data () {
return {
msg: 'Welcome to Your Vue.js App'
}
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
font-weight: normal;
}
ul {
list-style-type: none;
padding: 0;
}
li {
display: inline-block;
margin: 0 10px;
}
a {
color: #42b983;
}
</style>

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// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})

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<template>
<div class="about">
关于
</div>
</template>
<script>
export default {}
</script>
<style scoped>
</style>

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<template>
<div class="home">
首页22222222er32d32
</div>
</template>
<script>
export default {}
</script>
<style scoped>
</style>

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import Vue from 'vue'
import Router from 'vue-router'
import Home from '@/page/Home'
import About from '@/page/About'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/',
name: 'Home',
component: Home
},
{
path: '/about',
name: 'About',
component: About
}
]
})

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vue
vue-router vue路由管理
vue-cli vue的项目模板创建工具脚手架
vue-cli 2.x 老版本
vue-cli 3.x 4.x 新版本
webpack 项目的打包构建工具
dist
|-- css
|-- js
|-- img
|-- index.html
1: build/ vue-cli 启动文件
2: config/ vue-cli 启动的自定义配置文件
3: node_modules 是nodejs项目的依赖文件存放我们用到的插件源码
4: src/ 项目源代码
|-- assets 静态资源的 需要被webpack编译才能使用的资源
|-- components 存放公共组件的地方、
|-- router 存放vue-router 的配置文件
|-- App.vue 最外层最顶级的父组件
|-- main.js vue项目的入口文件
5: static 静态资源的
前提:体积比较大,且万年不变的资源
.babelrc: 他是插件babel 的配置文件,
babel把高版本的js转换为浏览器都可以识别的低版本js代码
.editorconfig 告诉编辑器,使用什么代码规范
.eslintignore eslint 的忽略文件
.eslintrc.js eslint 的配置文件
.gitignore 的忽略文件
.postcssrc.js postcss 专门做css兼容的
index.html 网站唯一的一个html文件 spa单页web应用
package.json nodejs的配置文件
README.md 项目的帮助文档

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【完成】1: 组件基础 https://cn.vuejs.org/v2/guide/components.html
类似于方法的概念
【完成】生命周期
留坑 keep-alive 缓存组件
【完成】2props https://cn.vuejs.org/v2/guide/components-props.html
【完成】3插槽 https://cn.vuejs.org/v2/guide/components-slots.html
【完成】4过渡动画 https://cn.vuejs.org/v2/guide/transitions.html
【完成】5路由https://router.vuejs.org/zh/guide/
【完成】6混入https://cn.vuejs.org/v2/guide/mixins.html
实现重复代码的灵活抽离封装
【完成】计算属性 computed 运算结果会被缓存起来
【完成】watch 监听器
【完成】7自定义指令 https://cn.vuejs.org/v2/guide/custom-directive.html
【完成】8过滤器 https://cn.vuejs.org/v2/guide/filters.html
vuerouter 学习
push
replace
query
http://127.0.0.1?id=1&page=1
:to={ path: '路径', query: {} }
params
http://127.0.0.1/1/1
必须结合 name 进行跳转
:to={ name: '路径', params: {} }
// js
// router-link
this.$route 获取路由参数信息
this.$router 调用路由各种方法的
路由模式:
1带 # 号的地址 hash 路由
http://127.0.0.1/#/info?id=1
2不带 # 号的地址 history 路由
http://127.0.0.1/info?id=1