html运行实例（jsck_replace_2）-搜寻教程库

代码示例：（标识：jsck_replace_2）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 字符串</h1>

<h2>replace() 方法</h2>

<p>replace() 方法在字符串中搜索值或正则表达式，并返回已替换值的新字符串。</p>

<p id="demo">Mr Blue has a blue house and a blue car.</p>

<script>
let str = document.getElementById("demo").innerHTML; 
let res = str.replace(/blue/g, "red");
document.getElementById("demo").innerHTML = res;
</script>

</body>
</html>