见注释…………
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>jquery事件命名空间</title> </head> <body> <div id="tree"></div> </body> <script src="../lib/jquery-1.11.1.js"></script> <script src="../lib/underscore.js"></script> <script> var Tree = function(element, options) { var $tree = this.$tree = $(element); //监听init事件，触发 //$tree.on(‘init‘, $.proxy(options.onInit, this));//用jquery实现 ok~~~ //$tree.on(‘init‘,options.onInit);//什么都不写 则会报错 // $tree.on(‘init‘,options.onInit.bind(this));//用原生bind实现 ok~~~ $tree.on(‘init‘,_.bind(options.onInit,this));//用 underscore实现 this.init(); }; Tree.prototype.init = function() { console.log(‘tree init!‘); this.$tree.trigger(‘init‘); }; var tree = new Tree(‘#tree‘, { onInit: function() { console.log(this.$tree.outerHeight()); } }); </script> </html>
jquery的 $proxy() 等于 underscore的bind 等于 原生js的 bind 没毛病吧？
原文：http://www.cnblogs.com/WhiteHorseIsNotHorse/p/6270470.html