AS3:目标与当前目标之间的差异 [英] AS3: Difference between target vs currentTarget

问题描述

可能的重复:
e.target 和 e.currentTarget 的区别

我不太明白这两者的区别

I don't really understand the difference between these two

event.target and              

event.CurrentTarget and explanation.

有人可以用一个简单的例子向我解释这一点吗?

Can somebody explain this to me on a simple example?

推荐答案

假设您创建了一个 TextInput 对象.

Suppose you create a TextInput object.

import fl.controls.TextInput;
import flash.events.MouseEvent;

var t:TextInput;

function init():void {
    t = new TextInput();
    t.x = 100;
    t.y = 100;
    t.width=100;
    t.height=30;
    t.addEventListener(MouseEvent.CLICK, fresult);
    this.addChild(t);
}

function fresult(e:Event):void {
    trace(e.target);
    trace(e.currentTarget);
}

init();

点击 TextInput 会显示:

Clicking on the TextInput gives the trace of:

[对象文本字段]
[对象文本输入]

[object TextField]
[object TextInput]

这意味着:

event.target 是事件起源的对象.即在这种情况下，一个 TextField 被点击，所以事件源自 TextField.

event.target is the object from which the event originated. i.e. in this case, a TextField was clicked on, so the event originated from the TextField.

event.currentTarget 是调用监听器的对象.在本例中，TextInput 调用了侦听器，因此 currentTarget 是 TextInput

event.currentTarget is the object which called the listener. In this case, the TextInput called the listener, so the currentTarget is TextInput

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