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编码猿
2024-09-27 02:06:13 +08:00
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Vue 指令</title>
<script src="https://vuejs.org/js/vue.js"></script>
</head>
<body>
<div id="app">
{{ message }}
<a :href="address" target="_blank">百度</a>
<img :src="vueLogo" :alt="message">
<button v-on:click="clickMore">点我</button>
<p v-html="h2">
</p>
<input @input="clickTwo" v-model="UserInfo.UserName" type="text" placeholder="请输入账户名">
<p v-if="showStatus">未登录</p>
<p v-else>已经登录</p>
<button @click="changeLoginStatus">切换登录状态</button>
<p v-for="(a,index) in list" :class="index == 0 ? 'hello' : '' "> {{a}} | {{ index }}</p>
</div>
<script>
/**
*
* v-bind: 把莫个变量绑定到标签的莫个属性上
* 简写 ":"
*
* v-on: 为莫个标签绑定事件
* 简写:@
*
* v-html 把字符串解析成html渲染到页面上类似 innerhtml
*
* v-model: 专门用来获取存放输入框里面用户输入的数据
*
* v-if : 条件判断,根据条件的真和假决定显示还是隐藏元素
* v-else
*
* v-if
*
* v-else-if
* v-else-if
* v-else
*
* v-for 专门用来变量数组渲染页面的
*
*/
new Vue({
el: "#app",
data: {
message: '你好我是Vue',
address: 'http://www.baidu.com',
vueLogo: 'https://cn.vuejs.org/images/logo.png',
h2: "<h2>我是h2标签</h2>",
UserInfo: {
UserName: null
},
showStatus: true,
list: [
4,5,7,2,4,7
]
},
// Vue开发中基本上所有的事件处理函数都放在 methods: {} 里面
methods: {
clickMore() {
alert(this.message)
//this.clickTwo()
},
clickTwo() {
console.log(this.UserName)
},
changeLoginStatus() {
this.showStatus = !this.showStatus
}
},
});
</script>
</body>
</html>