JS的typeof返回哪些数据类型？

<script>
    console.log(typeof 123);             //number
    console.log(typeof '123');           //string
    console.log(typeof function);        //报错 function是关键字
    console.log(typeof string);          //undefined
    console.log(typeof undefined);       //undefined
    console.log(typeof null);            //object 较为特殊
    console.log(typeof isNaN);           //function 是个判断函数
    console.log(typeof isNaN(123));      //boolean
    console.log(typeof []);              // object 数组也是对象
    console.log(Array.isArray);          //ƒ isArray() { [native code] }
    console.log(Array.isArray());        //false
    console.log(toString.call([]));      //[object Array]
    console.log([].constructor);         //ƒ Array() { [native code] }
</script>

总结一哈:number,string,boolean,underfind,object,function;