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@@ -0,0 +1,67 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <style>
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+ .box{
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+ width: 600px;
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+ height: 80px;
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+ border:3px solid black;
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+ border-radius: 20px;
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+ overflow: hidden;
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+ position: relative;
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+ }
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+ .progress{
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+ width: 0;
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+ height: 100%;
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+ background-color: #ff6700;
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+ }
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+ .text{
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+ position: absolute;
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+ height: 80px;
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+ line-height: 80px;
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+ left: 20px;
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+ top: 0;
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+ color: green;
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+ }
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+ </style>
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+</head>
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+<body>
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+ <div class="box">
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+ <div class="progress"></div>
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+ <div class="text">0%</div>
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+ </div>
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+ <button>开始</button>
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+ <script>
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+ // 获取按钮
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+ var oBtn = document.getElementsByTagName("button")[0];
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+ // 获取进度条
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+ var oProgress = document.getElementsByClassName("progress")[0];
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+ // 获取文字
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+ var oText = document.getElementsByClassName("text")[0];
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+
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+
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+ // 给按钮绑定点击事件
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+ oBtn.onclick = function(){
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+ // 获取元素宽度
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+ var width = oProgress.offsetWidth;
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+ // 定义数字变量
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+ var num = 0;
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+
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+ // 设置定时器
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+ var timer = setInterval(function(){
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+ num++;
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+ width += 6;
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+ oProgress.style.width = width + "px";
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+ oText.innerText = num + "%";
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+ if(width >= 600){
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+ clearInterval(timer)
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+ }
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+ },16)
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+
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+ }
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+ </script>
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+</body>
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+</html>
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