html5视频文件上传前，预览video

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>文档标题</title>
</head>
 
<body>
<video style="height:auto;" src="" id="video0" controls="controls"></video>
<input class="form-control" type="file" style="height:auto;"
id="video" name="video"/>
</body>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
 <script type="text/javascript">
 	$("#video").change(function(){
             var objUrl = getObjectURL(this.files[0]) ;
             console.log("objUrl = "+objUrl) ;
             if (objUrl) {
                 $("#video0").attr("src", objUrl) ;
             }
         }) ;
         //建立一个可存取到该file的url
         function getObjectURL(file) {
             var url = null ;
             if (window.createObjectURL!=undefined) { // basic
                 url = window.createObjectURL(file) ;
             } else if (window.URL!=undefined) { // mozilla(firefox)
                 url = window.URL.createObjectURL(file) ;
             } else if (window.webkitURL!=undefined) { // webkit or chrome
                 url = window.webkitURL.createObjectURL(file) ;
             }
             return url ;
         }
 </script>
</html>

来源：oschina

链接：https://my.oschina.net/u/555639/blog/4306257

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