<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 正则表达式</h1>
<p>source 属性返回 RegExp 模式的文本：</p>
<p id="demo"></p>
<script>
let text = "Visit （www.sou-xun.com）";
let pattern = /sou/g;
let result = pattern.source;
document.getElementById("demo").innerHTML = result;
</script>
</body>
</html>