js优化-prototype原型的使用

var builder = function (id) {this.init($(id));this.forms = [];/*this.init = function ()//写在内部，每个实例都会分配一个function,如果又存在大量的DOM存取，操作开销就大了.{var $row = $("<div class='row'>").appendTo($(id).addClass("container-fluid"));}this.addControl = function (ctrl) {}this.xxxxxx = function(){ }*/}builder.prototype.addControl = function (ctrl) {//原型，每个实例都共享一个原型。this.$content.append(ctrl.view);var self = this;ctrl.on('click', function () {var view = this.editor.render(this.model);self.$editor.html('').append(view);});this.forms.push(ctrl);}builder.prototype.getData = function () {return this.forms;}builder.prototype.init = function ($dom) {var $row = $("<div class='row'>").appendTo($dom.addClass("container-fluid"));var $toolBox = $("<div> class='col-md-3'").appendTo($row);this.$content = $("<div class='col-md-6'>").appendTo($row);this.$editor = $("<div class='col-md-3'>").appendTo($row);};return builder;