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@@ -0,0 +1,55 @@
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+<!DOCTYPE html>
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+<html>
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+ <head>
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+ <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=0,viewport-fit=cover">
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+ </head>
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+ <style>
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+ .item{
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+ padding: 10px;
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+ width: 100%;
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+ box-sizing: content-box;
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+ }
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+ </style>
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+<body>
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+
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+<div class="item" id="num">当前倍速: 1</div>
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+<form class="item" id="form">
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+ <input id="inp" step="0.01" type="number" placeholder="请输入倍速" value="1" />
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+ <button type="submit">设置</button><br>
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+</form>
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+
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+<input class="item" id="file" type="file" accept=".mp3"/>
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+
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+<audio class="item" id="myVideo" height="176" controls src="./SJE40W8.mp3">
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+ Your browser does not support HTML5 video.
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+</audio>
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+
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+<script>
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+var vid = document.getElementById("myVideo")
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+
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+document.getElementById('form').addEventListener('submit', function (evt) {
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+ evt.stopPropagation();
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+ evt.preventDefault();
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+ setPlaySpeed(document.getElementById("inp").value)
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+}, false)
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+
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+document.getElementById('file').addEventListener('change', function(evt) {
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+ var urlObject = window.URL || window.webkitURL || window
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+ if (evt.target.files.length) {
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+ var url = urlObject.createObjectURL(evt.target.files[0])
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+ vid.src = url
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+ }
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+}, false)
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+
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+function getPlaySpeed() {
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+ alert(vid.playbackRate);
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+}
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+
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+function setPlaySpeed(num) {
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+ document.getElementById("num").innerText = '当前倍速: ' + num
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+ vid.playbackRate = num;
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+}
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+</script>
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+
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+</body>
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+</html>
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wolyshaw