tryjsref_attr_isid 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool在线教程(w3cschool.cn)</title>
</head>
<body>
<p id="demo">单击按钮查看在这个P元素的第一个属性是否是一个ID属性</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
    var x=document.getElementById("demo");
    x.innerHTML=x.attributes[0].isId;
}
</script>
<p>注意:Internet Explorer 或者 Opera不支持isId属性。</p>
</body>
</html>
 
 
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运行结果
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