[ Javascript ] - 20140601-题目1

[ Javascript ] - 20140601-题目1

javascript里typeof返回的结果有哪几种？

PS:
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```javascript
// you code
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有6种，分别是：

typeof {} == "object"
typeof 10 == "number"
typeof function() {} == "function"
typeof "This is String" == "string"
typeof Undefined == "undefined"
typeof true == "boolean"

typeof 返回的是一个字符串

https://github.com/hjzheng/JavaScript-Test-Type-Table
基本上已经涵盖了所有的类型判断

补充两个上面链接中没有的：

typeof NaN == "number"
typeof arguments == "object"

 typeof null =='object';
typeof [] =='object'

object, function, boolean, number, string, undefined