<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script type="text/javascript">
var name_01=null,name_02=10,var name_03="我是字符串",name_04="10",name_05;
console.log(isNaN(name_01));
console.log(isNaN(name_02));
console.log(isNaN(name_03));
console.log(isNaN(name_04));
console.log(isNaN(name_05));
</script>
</body>
</html>这个哪里错了,控制台打印不出
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