<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>NaN</title>
</head>
<body>
<script>
console.log(NaN != NaN); // true
console.log(NaN > NaN); // false
console.log(NaN < NaN); // false
console.log(NaN == NaN); // false
console.log(NaN > 0); // false
</script>
</body>
</html>
js NaN.html
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转载自blog.csdn.net/weixin_42193179/article/details/90697020
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