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<!DOCTYPE html>
<html>
<body>
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<h1>JavaScript 正则表达式</h1>
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<p>全局搜索 "l"，后跟零个或多个 "o" 字符：</p>
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<p id="demo"></p>
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<script>
let text = "Hellooo World! Hello W3School!"; 
let pattern = /lo*/g;
let result = text.match(pattern);
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document.getElementById("demo").innerHTML = result;
</script>
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</body>
</html>
​