first commit

2024-09-27 02:06:13 +08:00
commit 852d94fbb9
36760 changed files with 3274413 additions and 0 deletions
--- a/历届学生/font-end-nine/项目练习/上课项目/js案例/富强.html
+++ b/历届学生/font-end-nine/项目练习/上课项目/js案例/富强.html
@@ -0,0 +1,139 @@
+<!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>富强</title>
+    <style>
+        body {
+            height: 100vh;
+        }
+
+        body,
+        ul,
+        li {
+            margin: 0;
+            padding: 0;
+            list-style: none;
+        }
+
+        span {
+            position: fixed;
+
+        }
+    </style>
+</head>
+
+<body>
+
+</body>
+
+<script>
+    // 1：在鼠标点击的位置，依次显示字
+    //    1 为body绑定点击事件，然后拿到 x,y坐标，设置到 span(使用js创建) 标签上
+    //    2 把做好的span 放到body上
+
+    // 2: 让文字运动起来
+    var textArr = ['富强', '民主', '文明', '和谐', '自由', '平等', '公正', '法治', '爱国', '敬业', '诚信', '友善'];
+    var index = 0;
+
+    $("body").onclick = function (e) {
+        var time = null;
+        var { x, y } = e;
+        var span = document.createElement("span");
+        span.innerText = textArr[index];
+
+        span.style = `
+          left: ${x}px;
+          top: ${y}px;
+        `;
+
+        index++
+        index > 11 ? index = 0 : ''
+
+        span.move = 0
+
+        $("body").appendChild(span)
+
+
+        function motion() {
+            span.move += 4;
+            console.log("span.move: ", span.move);
+            if (span.move > 100) {
+                setTimeout(() => $("body").removeChild(span), 300)
+                // clearTimeout(time)
+                cancelAnimationFrame(time)
+            } else {
+                span.style.top = `${y - span.move}px`
+                time = requestAnimationFrame(motion)
+            }
+        }
+
+        motion()
+
+     
+
+    }
+
+ 
+
+    function motion(el, y) {
+   
+        // time = setTimeout(function fn() {
+        //     el.move+=4;
+        //     console.log("el.move: ", el.move);
+        //     if (el.move > 100) {
+
+        //         setTimeout(() =>  $("body").removeChild(el),300)
+
+        //         clearTimeout(time)
+        //     } else {
+        //         el.style.top = `${y - el.move}px`
+        //         time = setTimeout(fn, 1000/60)
+        //     }           
+        // }, 1000/60)
+
+
+        // setTimeout(function () {
+        //     $("body").removeChild(el)
+        // }, 800)
+    }
+
+
+
+
+    function $(className) {
+        return document.querySelector(className)
+    }
+
+
+    // 箭头函数
+    // var a = test => console.log("test")
+
+    // a(1)
+
+
+    // 闭包
+    // 函数内部的函数访问外部变量的过程
+    // 为了解决：变量缓存的问题
+
+    function a() {
+        var c = 1
+        function test() {
+            c++
+            return c;
+        }
+        return test
+    }
+
+    var t = a();
+    console.log(t());
+    console.log(t());
+
+    var c = a();
+    console.log(c());
+</script>
+
+</html>