html运行实例（jsck_trim_2）-搜寻教程库

代码示例：（标识：jsck_trim_2）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 字符串</h1>

<h2>replace() 方法</h2>

<p>删除字符串两边的空格：</p>

<pre><p id="demo1"></p></pre>
<pre><p id="demo2"></p></pre>

<script>
let text = "    Hello World!    ";
let result = text.replace(/^\s+|\s+$/gm,'');

document.getElementById("demo1").innerHTML = text;
document.getElementById("demo2").innerHTML = result;
</script>

</body>
</html>