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web前端入门到实战:HTML5 视频流行插件之video.js

程序员文章站 2022-05-06 09:10:31
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Video.js 是一个通用的在网页上嵌入视频播放器的 JS 库,Video.js 自动检测浏览器对 HTML5 的支持情况,如果不支持 HTML5 则自动使用 Flash 播放器。

(要支持ie低版本请下载5.4.3版 )点击进入官网

下载地址:http://www.jq22.com/jquery-info404

也可以使用cdn

<link href="//cdn.bootcss.com/video.js/7.0.0-alpha.1/alt/video-js-cdn.css" rel="stylesheet">
<script src="//cdn.bootcss.com/video.js/7.0.0-alpha.1/video.min.js"></script>  

首先给video标签加上 video-js 的类

data-setup="{ }"  使控件样式发生改变

专门建立的学习Q-q-u-n: 784783012 ,分享学习的方法和需要注意的小细节,不停更新最新的教程和学习技巧
(从零基础开始到WEB前端项目实战教程,学习工具,全栈开发学习路线以及规划)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js" controls data-setup="{}" width="960" height="400">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

vjs-big-play-centered 类, 控制按钮居中显示


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="960" height="400">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

preload=“auto” 预加载

线上观看时比较直观


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="960" height="400" preload="auto">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
</body>
</html>

poster=" " 设置封面图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

videojs是封装好的方法

.ready 表示视频已就绪,类似于 canplay(其实完全不如canplay,下面案例有体现)

.currentTime() 当前时间


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");
        myvideo.ready(function(){
            console.log("已就绪");
        }); //绑定在window上,点击可获取当前时间进度
 onclick=function(){
            console.log(myvideo.currentTime());
        } </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

(报错是因为之前有语法错误,已修正。这里贴的代码都是木有问题的)

current(time) 设置当前播放时间

专门建立的学习Q-q-u-n: 784783012 ,分享学习的方法和需要注意的小细节,不停更新最新的教程和学习技巧
(从零基础开始到WEB前端项目实战教程,学习工具,全栈开发学习路线以及规划)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo"); //100秒处开始播放
 myvideo.currentTime(100);

        myvideo.ready(function(){
            console.log("已就绪");
        }); //绑定在window上,点击可获取当前时间进度
 onclick=function(){
            console.log(myvideo.currentTime());
        } </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

.duration() 获取视频总时长

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo"); //100秒处开始播放
 myvideo.currentTime(100);

        myvideo.ready(function(){ //在ready中显示NaN
 console.log(this.duration());
        }); //绑定在window上
 onclick=function(){
            console.log(myvideo.duration());
        } </script>
</body>
</html>

在这里可以看出 ready不如canplay

因为canplay中已经可以获取到总时长,而ready中还是NaN,有点辣鸡啊

buffered() 视频已经缓冲了多少

不在本地测试比较明显


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo"); //100秒处开始播放
 myvideo.currentTime(100);

        myvideo.ready(function(){ //缓冲
 console.log(this.buffered());
        }); //绑定在window上
 onclick=function(){
            console.log(myvideo.duration());
        } </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

volume() 获取和设置声音


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo"); //获取声音
 console.log(myvideo.volume()); //设置声音
 myvideo.volume(.5);

        console.log(myvideo.volume()); </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

width()   height()  获取和设置视频的宽高


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo"); //获取宽高
 console.log(myvideo.width());
        console.log(myvideo.height());

        myvideo.width(300);
        myvideo.height(200);

        console.log(myvideo.width());
        console.log(myvideo.height()); </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

如何查看更多方法:


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        console.log(myvideo); </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

事件监听 on


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>

    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        myvideo.on("ended",function(){
            console.log("视频播放结束");
        })

        myvideo.on("pause",function(){
            console.log("点击暂停");
        })

        myvideo.on("play",function(){
            console.log("点击播放");
        })

        myvideo.on("volumechange",function(){
            console.log("声音改变");
        })

        myvideo.on("timeupdate",function(){
            console.log("视频播放中");
        })

        myvideo.on("seeked",function(){
            console.log("视频跳转结束");
        })

        myvideo.on("seeking",function(){
            console.log("视频跳转中");
        }) </script>
</body>
</html>

web前端入门到实战:HTML5 视频流行插件之video.js

差不多跟原生video是一样一样的