proxy Implementation Binding Proxy Method of JQuery

In javascript, the object referred to by this will change from time to time, which will cause program confusion. One common practice is to save this in a variable first, so we are not afraid of her change. Let's look at a small example first

var A = function(){
   this.star = functiont(){};
   this.beg = function(){
    var that = this;
    $node.click(function(){
       //this.start();// Here's this Refers to the $node Object 
        that.start();
    });
  };
}

JQuery provides proxy method, which can bind a proxy object, this has changed, I am not afraid, that when this, I am not afraid, proxy has you, the object changes, I am not afraid......

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