怎样区别stopPropagation()与stopImmediatePropagation()

 

 

 

var cont:Sprite = new Sprite();cont.graphics.beginFill(0xEEEEEE);cont.graphics.drawRect(0,0,100,80);cont.graphics.endFill();addChild(cont);cont.addEventListener(MouseEvent.MOUSE_DOWN,down);cont.addEventListener(MouseEvent.MOUSE_UP,up);var shape:Sprite = new Sprite();shape.graphics.beginFill(0x000000);shape.graphics.drawRect(20,20,40,40);shape.graphics.endFill();cont.addChild(shape);shape.addEventListener(MouseEvent.MOUSE_DOWN,downToo,false,2);shape.addEventListener(MouseEvent.MOUSE_DOWN,downToo2,false,1);function down(event:MouseEvent):void{ trace("STOP"); }function up(event:MouseEvent):void{ trace("I still can do");}function downToo(event:MouseEvent):void{ trace("I...maybe"); event.stopImmediatePropagation();}function downToo2(event:MouseEvent):void{ trace("I...maybe2");}

 

先响应shape
另外加了一个监听  stopImmediatePropagation然后再换成stopPropagation 试试就知道区别了

简而言之 stopImmediatePropagation和stopPropagation都能阻挡掉事件流中事件的冒泡

但是stopImmediatePropagation 会让当前对象(不仅parent了)的次优先级的所有监听都不执行