Yet another typeof function

typeOf.js

console.log("------built in function 'typeof'-----");
console.log("typeof 'string'       => ",typeof "string");       //string
console.log("typeof true           => ",typeof true);           //boolean
console.log("typeof 1              => ",typeof 1);              //number
console.log("typeof null           => ",typeof null);           //object
console.log("typeof NaN            => ",typeof NaN);            //number
console.log("typeof Infinity       => ",typeof Infinity);       //Number
console.log("typeof undefined      => ",typeof undefined);      //undefined
console.log("typeof new Object()   => ",typeof new Object());   //object
console.log("typeof new Array      => ",typeof new Array());    //object
console.log("typeof new Function() => ",typeof new Function()); //function

console.log("------yet another function 'typeOf'-----");
var typeOf = function(that){
  var t = Object.prototype.toString.call(that);
  return t.split(" ")[1].replace("]","");
};

console.log("typeOf('string'))      => ", typeOf("string"));        //String
console.log("typeOf(true))          => ", typeOf(true));            //Boolean
console.log("typeOf(1))             => ", typeOf(1));               //Number
console.log("typeOf(null))          => ", typeOf(null));            //Null
console.log("typeOf(NaN))           => ", typeOf(NaN));             //Number
console.log("typeOf(Infinity))      => ", typeOf(Infinity));        //Number
console.log("typeOf(undefined))     => ", typeOf(undefined));       //Undefined
console.log("typeOf(new Object()))  => ", typeOf(new Object()));    //Object
console.log("typeOf(new Array()))   => ", typeOf(new Array()));     //Array
console.log("typeOf(new Function()) => ", typeOf(new Function()));  //Function