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<!DOCTYPE html>
<html>
<title>JavaScript 相同运算符(===)示例 - 基础教程(div.cn)</title>
<body>
<p>相同的运算符(===)检查两个操作数是否相等,并且它们的类型相同:</p>
<script>
var a = 20;
var b = "20";
document.write(Boolean(a === b));
</script>
</body>
</html>