tryjsref_replace3 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教程(w3cschool.cn)</title>
</head>
<body>
<p>单击按钮将段落中的“blue”替换成“red”。</p>
<p id="demo">Mr Blue has a blue house and a blue car.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction(){
    var str=document.getElementById("demo").innerHTML; 
    var n=str.replace(/blue/gi,"red");
    document.getElementById("demo").innerHTML=n;
}
</script>
</body>
</html>
 
 
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运行结果
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