js如何控制视频播放及快进速度？
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<style>
#durationBar{
border:solid 1px #164900;
width:100%;
margin-bottom:5px;
}
#positionBar{
height:20px;
color:white;
font-weight:bold;
background:#2D9900;
text-align:center;
}
</style>
<script>
//播放
function play(){
var video = document.getElementById("videoPlayer");
video.play();
}
//暂停
function pause(){
var video = document.getElementById("videoPlayer");
video.pause();
}
//停止
function stop(){
var video = document.getElementById("videoPlayer");
video.pause();
video.currentTime = 0;
}
//快放
function speedUp(){
var video = document.getElementById("videoPlayer");
video.play();
video.playbackRate = 2;
}
//慢放
function slowDown(){
var video = document.getElementById("videoPlayer");
video.play();
video.playbackRate = 0.5;
}
//正常速度
function normalSpeed(){
var video = document.getElementById("videoPlayer");
video.play();
video.playbackRate = 1;
}
//进度条相关
function progressUpdate(){
var video = document.getElementById("videoPlayer");
//动态设置进度条
var postionBar = document.getElementById("positionBar");
postionBar.style.width = (video.currentTime / video.duration * 100) + "%";
//设置播放时间
displayStatus.innerHTML = (Math.round(video.currentTime*100)/100) + "秒";
}
</script>
<body>
<video id="videoPlayer" src="//repo.bfw.wiki/bfwrepo/video/5d87423a07471.mp4" width="400" height="300"
BfwOntimeupdate="progressUpdate()" loop="loop">
</video>
<div id="durationBar">
<div id="positionBar"><span id="displayStatus">0秒</span></div>
</div>
<buttonBfwOnclick="play()">播放</button>
<buttonBfwOnclick="pause()">暂停</button>
<buttonBfwOnclick="stop()">停止</button>
<buttonBfwOnclick="speedUp()">快放</button>
<buttonBfwOnclick="slowDown()">慢放</button>
<buttonBfwOnclick="normalSpeed()">正常</button>
</body>
</html>by thinkfuture
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