html运行实例（jsck_regexp_exec

代码示例：（标识：jsck_regexp_exec_1）

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript RegExp</h2>

<p>exec() 方法测试（检索）字符串中的匹配项：</p>

<p>在字符串中搜索字符 "e"：</p>

<p id="demo"></p>

<script>
let text = "The best things in life are free";
let result = /e/.exec(text);
document.getElementById("demo").innerHTML = result;
</script>

</body>
</html>