isFinite() 是否有限

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<script>
		console.log(isFinite(NaN));
		console.log(isFinite(Infinity));
		console.log(isFinite(-Infinity));
		console.log(isFinite(0));
		console.log(isFinite(10));
		console.log(isFinite('10'));
	</script>
</body>
</html>

　　结果如下：

所以，isFinite() 的作用就是，当参数不是NaN、Infinity、-Infinity 时，返回true。

author：Lik
Endeavoring to powerless, struggling to move yourself.