1,总结
2,代码演示
<style>
progress{
width: 500px;
}
</style>
</head>
<body>
<span>手机电量:</span>
<meter max="100" min="0" value="90" low="10" high="20" optimum="90"></meter>
<br>
<span>当前进度:</span>
<progress max="100" value="20"></progress>
</body>
3,运行结果