HTML5视频（自定义视频播放器源码）

video对象

兼容情况：

safari浏览器不支持webm格式

Chrome浏览器支持webm格式

ie8以及以下不支持video标签 , ie9支持video标签 ,但是支持mp4格式的

Firefox(火狐浏览器)支持ogv格式的视频

---

兼容性写法

    <video controls>
        <source src="data/demo.ovg">
        <source src="data/demo.mp4">
        <source src="data/demo.webm">
        您的浏览器不支持，请升级您的浏览器
    </video>

video 标签 width height autoplay muted
poster带有预览图（海报图片）的视频播放器

    <video src='data/demo.mp4' muted controls autoplay height='400' width="200" poster='data/poster.jpg'></video>

选中video标签

        var VideoNode = document.getElementById('myVideo');

src控制视频的来源

        VideoNode.src = 'data/demo.ogv';

手动设置控件 controls

        VideoNode.controls = true;

设置视频音量

        VideoNode.volume = 0.5;

currentTime当前播放时间
快进效果

        gogogo.onclick = function(){
            VideoNode.currentTime = VideoNode.currentTime + 3;
        };

暂停 pause()

        stopNode.onclick = function(){
            VideoNode.pause();
        };

播放play()

        playNode.onclick = function(){
            VideoNode.play();
        };

load 刷新播放器的事件

        reloadNode.onclick = function(){
            VideoNode.src = 'data/demo.mp4';
            VideoNode.load();
        };

canplay 视频已经加载好 可以开始播放了

        VideoNode.addEventListener('canplay',function(){
            console.log('视频已经加载好 可以开始播放了');
        });

requestFullscreen 让video标签变成全屏
VideoNode.webkitRequestFullscreen();
VideoNode.mozRequestFullScreen();

        fullScreenNode.onclick = function(){
            if(VideoNode.webkitRequestFullscreen){
                VideoNode.webkitRequestFullscreen();
            }
            else if(VideoNode.mozRequestFullScreen){
                VideoNode.mozRequestFullScreen();
            }
        };

volumechange 当音量更改时

        VideoNode.onvolumechange = function(){
            console.log('volumechange');
        };

声音随机更改

        volumeNode.onclick = function(){
            VideoNode.volume = Math.random();
        };

seeking 当用户开始拖动进度条时 就会触发的事件

        var seekingNum = 0;
        VideoNode.onseeking = function(){
            console.log('seeking...');
            seekingNum++;
            seeking.innerHTML = seekingNum;
        };

seeked 当用户对视频的进度条并且已经完成操作时会触发的事件

        var seekedNum = 0;
        VideoNode.onseeked = function(){
            console.log('seeked...');
            seekedNum++;
            seeked.innerHTML = seekedNum;
        };

timeupdate监听视频播放的状态

        VideoNode.addEventListener('timeupdate',function(){
            // 总时长，以分钟：秒的形式显示
            let allTime = parseInt(VideoNode.duration/60)+':'+parseInt(VideoNode.duration%60);
            // 当前时间，以分钟：秒的形式显示
            let nowTime = parseInt(VideoNode.currentTime/60)+':'+parseInt(VideoNode.currentTime%60);
            timeNode.innerHTML = nowTime+'/'+allTime;
        })

readyState 视频的准备信息

        console.log(VideoNode.readyState);
        setTimeout(function(){
            console.log(VideoNode.readyState);
        },500);

playbackRate 查看或设置视频的一个播放速度

        console.log(VideoNode.playbackRate)

Rate设置倍速

        //Rate设置0.5倍速
        RateNode.children[0].onclick = function(){
            VideoNode.playbackRate = 0.5;
        };
        //Rate设置1倍速
        RateNode.children[1].onclick = function(){
            VideoNode.playbackRate = 1;
        };
        //Rate设置2倍速
        RateNode.children[2].onclick = function(){
            VideoNode.playbackRate = 2;
        };

loop的设置

        loopNode.onclick = function(){
            if(VideoNode.loop == false){
                this.innerHTML = '循环';
                VideoNode.loop = true;
            }
            else{
                this.innerHTML = '不循环';
                VideoNode.loop = false;
            }
        };

src返回的数据

        console.log('src='+VideoNode.src);

currentSrc返回的数据

        console.log('currentSrc='+VideoNode.currentSrc);

监听ended事件

        VideoNode.addEventListener('ended',function(){
            console.log('视频播放结束了');
            VideoNode.play();
        })

查看视频的网络状态

        console.log(VideoNode.networkState)

手动设置控件 controls

        VideoNode.controls = true;

手动设置静音 muted

        VideoNode.muted = true;

自定义视频播放器
放图

<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title> 
    <style type="text/css">
*{margin: 0;padding: 0;list-style: none;} 
.outerNode{width: 540px;height: 332px;position: absolute;left: 50%;top: 50%;margin: -166px 0 0 -270px;box-shadow: 0 0 4px #5b606d;}  
.outerNode .videoNode{
    width: 540px;height: 305px;float: left;
    background: black;
}     
.outerNode .controlsNode{
    width: 540px;height: 27px;float: left;background: url(images/ctrs_bg.gif) repeat-x;
}

.outerNode .controlsNode .playNode{
    float: left;width: 15px;height: 17px;margin: 6px 0 0 14px;
    background: url(images/playNode.png) no-repeat;cursor: pointer;
}
.outerNode .controlsNode .pauseNode{
    float: left;width: 15px;height: 17px;margin: 6px 0 0 14px;
    background: url(images/pause.png) no-repeat;cursor: pointer;
}


.outerNode .controlsNode .loadNode{width: 267px;height: 10px;margin: 9px 0 0 14px;float: left;background: url(images/load_bg.png) repeat-x;position: relative;}
.outerNode .controlsNode .loadNode .lineNode{
    width: 0%;height: 7px;position: absolute;left: 0;top: 1px;
    background: url(images/line_bg.png) repeat-x;

}
.outerNode .controlsNode .loadNode .lineNode .lineRight{
    width: 2px;height: 100%;position: absolute;right: 0;top: 0;
    background: url(images/line_r_bg.png) no-repeat;
}

.outerNode .controlsNode .loadNode .loadLeft{
    height: 100%;width:3px ;position: absolute;left: 0;top: 0;
    background: url(images/left_bg.png) no-repeat;z-index: 4;
}
.outerNode .controlsNode .loadNode .loadRight{
    height: 100%;width:3px ;position: absolute;right: 0;top: 0;
    background: url(images/right_bg.png) no-repeat;
}
.outerNode .controlsNode .loadNode .crlNode{width: 17px;height: 17px;background: url(images/crl_bg.png);position: absolute;left: -8.5px;top: -3.5px;cursor: pointer;z-index: 5;}

.outerNode .controlsNode .timeNode{
    float: left;width: 75px;height: 10px;margin: 9px 0 0 9px;
}
.outerNode .controlsNode .timeNode span{font-size:10px;float: left;line-height: 10px;color: white; }
.outerNode .controlsNode .volumeNode{
    width: 17px;height: 16px;float: left;margin: 5px 0 0 6px;
    background: url(images/volume_bg.png);
}
.outerNode .controlsNode .volumeLine{
    height: 8px;width: 61px;float: left;margin: 10px 0 0 4px;
    background: url(images/volumeLine_bg.png) repeat-x;position: relative; 
}
.outerNode .controlsNode .volumeLine .v_left{
    width: 3px;height:100%;position: absolute;left: 0;top: 0;background: url(images/v_left.png) no-repeat;
}
.outerNode .controlsNode .volumeLine .v_right{
    width: 3px;height:100%;position: absolute;right: 0;top: 0;background: url(images/v_right.png) no-repeat;
}
.outerNode .controlsNode .volumeLine .v_DragNode{width: 15px;height: 13px;position: absolute;left: 58.5px;top: -3.5px;background: url(images/vo_d.png) no-repeat;cursor: pointer;}
.outerNode .controlsNode .fullNode{
    width:15px;height:17px;float: left;margin: 6px 0 0 35px;
    background: url(images/full_bg.png) no-repeat;cursor: pointer;
    transition: 0.7s;
}
.outerNode .controlsNode .fullNode:hover{
    background: url(images/full_hover_bg.png) no-repeat;
}

    </style>

</head>
<body>
    <!-- 最外层的元素 -->
    <div class='outerNode'>
        <!-- video元素 -->
        <video class='videoNode' src='data/imooc.mp4' poster="data/poster.jpg"></video>
        <!-- 控制器的元素 -->
        <div class='controlsNode'>
            <!-- 控制播放暂停的按钮 -->
            <div class='playNode'></div>
            <!-- video的进度条 -->
            <div class='loadNode'>
                <div class='loadLeft'></div>
                <div class='loadRight'></div>
                <!-- 拖动进度条的按钮 -->
                <div class='crlNode'></div>
                <!-- 真正的进度条 -->
                <div class='lineNode'>
                    <div class='lineRight'></div>
                </div>
            </div>
            <!-- 时间的元素 -->
            <div class='timeNode'>
                <span class='now'>00:00</span>
                <span> - </span>
                <span class='all'>4:30</span>
            </div>
            <!-- 声音的标志 -->
            <div class='volumeNode'></div>
            <!-- 声音的条 -->
            <div class='volumeLine'>
                <div class='v_left'></div>
                <div class='v_right'></div>
                <div class='v_DragNode'></div>
            </div>
            <!-- 全屏的按钮 -->
            <div class='fullNode'></div>
        </div>
    </div>
<script type="text/javascript">
    //播放暂停的控制
    //PlayNode 播放器按钮
    //VideoNode 播放器
    //PlayBln 控制暂停播放的布尔值
    //FullNode 全屏按钮
    //nowNode 当前时间
    //allNode 视频的全部时间
    //LineNode 当前的进度条
    //CrlNode 进度条按钮
    //LoadNode 进度条外面的元素
    var PlayNode = document.getElementsByClassName('playNode')[0],
        VideoNode = document.getElementsByClassName('videoNode')[0],
        FullNode = document.querySelector('.fullNode'),
        nowNode = document.querySelector('.now'),
        allNode = document.querySelector('.all'),
        LineNode = document.querySelector('.lineNode'),
        CrlNode = document.querySelector('.crlNode'),
        LoadNode = document.querySelector('.loadNode'),
        VDragNode = document.querySelector('.v_DragNode'),
        PlayBln = true;

    //播放、暂停的事件
    PlayNode.onclick = function(){
        //传统的通过布尔值去改变classname的方法
        PlayBln = !PlayBln;
        if(PlayBln == false){
            this.className = 'pauseNode';
            VideoNode.play();

        }
        else{
            this.className = 'playNode';
            VideoNode.pause();
        }
    };

    //全屏按钮的事件
    FullNode.onclick = function(){
        if(VideoNode.webkitRequestFullscreen){
            VideoNode.webkitRequestFullscreen();
        }
        else if(VideoNode.mozRequestFullScreen){
            VideoNode.mozRequestFullScreen();
        }
        else{
            VideoNode.requestFullscreen();
        }
    };

    //解决最开始时间的NAN的问题
    VideoNode.addEventListener('canplay',function(){
        var needTime = parseInt(VideoNode.duration);
        var  s = needTime%60;
        var  m = parseInt(needTime / 60);
        var timeNum = toDou(m)+':'+toDou(s);
        allNode.innerHTML = timeNum;
    },false);

    //解决 时间不足10 的问题
    function toDou(time){
        return time<10?'0'+time:time;
    }

    //当视频播放的时候 需要当前的时间动起来
    VideoNode.addEventListener('timeupdate',function(){
        //目前的 百分比进度
        LineNode.style.width = VideoNode.currentTime/VideoNode.duration*100+'%';
        CrlNode.style.left = LineNode.offsetWidth - 8.5 + 'px'

        var needTime = parseInt(VideoNode.currentTime);
        var  s = needTime%60;
        var  m = parseInt(needTime / 60);
        var timeNum = toDou(m)+':'+toDou(s);
        nowNode.innerHTML = timeNum;
    },false);

    //声音的拖拽按钮
    VDragNode.onmousedown = function(e){
        var ev = e || event;
        var l = ev.clientX - this.offsetLeft;
        document.onmousemove = function(e){
            var ev = e || event;
            var needX = ev.clientX - l;
            var maxX = VDragNode.parentNode.offsetWidth - 2.5;

            needX = needX < -2.5 ? - 2.5 : needX;
            needX = needX > maxX ? maxX : needX;
            //计算0 - 1
            var lastVolume = (VDragNode.offsetLeft + 2) / VDragNode.parentNode.offsetWidth ;
            VideoNode.volume = lastVolume < 0 ? 0 : lastVolume;

            VDragNode.style.left = needX + 'px';
        };
        document.onmouseup = function(e){
            document.onmousemove = document.onmouseup = null;
        }
        return false;
    }
    //拖拽进度条按钮
    CrlNode.onmousedown = function(e){
        var ev = e || event;
        var l = ev.clientX - this.offsetLeft;
        VideoNode.pause();

        document.onmousemove = function(e){
            var ev = e || event;
            var needX = ev.clientX - l;
            var maxX = LoadNode.offsetWidth - 8.5;

            needX = needX < -8.5 ? -8.5 : needX;
            needX = needX > maxX ? maxX : needX;
            CrlNode.style.left = needX + 'px';
            LineNode.style.width = (CrlNode.offsetLeft+9)/LoadNode.offsetWidth*100 + '%';


        };
        document.onmouseup = function(){
            document.onmousemove = document.onmouseup = null;
            VideoNode.currentTime = VideoNode.duration * (CrlNode.offsetLeft+9)/LoadNode.offsetWidth;
            if(PlayBln == false){
                //console.log(1);
                PlayNode.className = 'pauseNode';
                VideoNode.play();
            }
            else{
                //console.log(2);
                PlayNode.className = 'playNode';
                VideoNode.pause();
            }
        };
        return false;
    };

</script>
</body>
</html>