javascript的typeof返回的数据类型

javascript的typeof返回的数据类型有：

1. undefined
2. string
3. boolean
4. number
5. Object
6. Function

示例：

//underfined
var a;
console.log(typeof a);

//string
var a = "";
var b = "hello"
console.log(typeof a);
console.log(typeof b);

//boolean
var a = true;
console.log(typeof a);

//number
var a = 15;
console.log(typeof a);

//object
var a = null;
var b = {};
var c = [];
console.log(typeof a);
console.log(typeof b);
console.log(typeof c);

//function
function fun1() {};
var fun2 = function () {};
console.log(typeof fun1);
console.log(typeof fun2);