Prototype学习笔记系列之Event.stopObserving()

Prototype学习笔记系列之Event.stopObserving().

为了让stopObserving工作, 你必须传递和observe调用完全一样的参数.

 

<script src="./scriptaculous/lib/prototype.js" type="text/javascript"></script>
<script src="./scriptaculous/src/scriptaculous.js" type="text/javascript"></script>

<div id='div1'>Hello world!</div>

<script type='text/javascript'>
var ClassA = Class.create();
ClassA.prototype = {
 initialize : function(){
  this.handler=this._handlerA.bind(this);

  //把当前对象(ClassA)的_handlerA方法绑定到当前对象(ClassA)的handler属性.
 },

 observe : function(){
  //this.handler=this._handlerA.bind(this);
  Event.observe($('div1'),'click',this.handler);

  Event.observe($('div1'),'click',this._handlerB);

 },

 _handlerA : function(){
  alert('observer a');
 },

 _handlerB : function(){
  alert('observer b');
 },

 stopObserving : function(){
  //this.handler=this._handlerA.bind(this);
  Event.stopObserving($('div1'),'click',this.handler);

  Event.stopObserving($('div1'),'click',this._handlerB);
 },

 test: function () {
  return this._handlerA.bind(this);
 }

}

var ins = new ClassA();

ins.observe();
alert(ins.test());
//ins.stopObserving()
</script>