JQuery之proxy实现绑定代理方法

var A = function(){
   this.star = functiont(){};
   this.beg = function(){
    var that = this;
    $node.click(function(){
       //this.start();//这里的this指代的是$node对象
        that.start();
    });
  };
}

$node.on('click',$.proxy(function(){
   this.start();
},this)