function detail() {    this.imgArr = [];    this.codeArr = [];}detail.prototype.addimg = function(img) {    this.imgArr.push(img);};detail.prototype.addcode = function(code) {    this.codeArr.push(code);};detail.prototype.show = function() {    $.each(this.imgArr, function(index, val) {        $('#resDiv').html($('#resDiv').html() + val);    });    $.each(this.codeArr, function(index, val) {        $('#resDiv').html($('#resDiv').html() + val);    });};var detailFactory = {};var d1 = new detail();d1.addimg('img1');d1.addcode('code1');var d2 = new detail();d2.addimg('img2');d2.addcode('code2');detailFactory.df1 = d1;detailFactory.df2 = d2;$(function() {    var r = Math.random();    if (r > 0.5) {        detailFactory.df2.show();    } else {        detailFactory.df1.show();    }});