<html>
<body>
<embed id="myEmbed" src="helloworld.swf">
<p>点击按钮返回 embed 元素 src 属性的值。</p>
<p id="demo"></p>
<button onclick="myFunction()">尝试一下</button>
<script>
function myFunction()
{
var x = document.getElementById("myEmbed").src;
document.getElementById("demo").innerHTML=x;
}
</script>
</embed></body>
</html>