<html>
<body>
<h1>演示如何访问 OBJECT 元素</h1>
<object id="myObject" width="641" height="360" data="/i/video/shanghai.mp4">
</object>
<p>单击该按钮可获取嵌入式视频文件的 URL。</p>
<button onclick="myFunction()">试一试</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myObject").data;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>