var myObj = {//對(duì)象字面量  param1: 1,  param2: 2,  sum: function (){//this關(guān)鍵字只帶當(dāng)前的對(duì)象return this.result = this.param1 + this.param2;  }}myObj.sum(); //=>3

var add = function(a, b){  return a + b;}//函數(shù)調(diào)用模式add(1,2); //=>3

function add(a, b){  return a + b;}add(1,2);//=>3

var add = function() {  this.name = "匯智網(wǎng)";  this.sum = function (a, b){    return a + b;  }}// 構(gòu)造器調(diào)用模式var obj = new add(); //obj是一個(gè)對(duì)象obj.sum(1,2); //=>3

var add = function (a, b) {  return a + b;} add.apply(null,[1,2]); //=>3

var add = function (a, b) {  return a + b;}add.call(null,1,2); //=>3