AS3事件调度方法

//1.
    eventObj:YouTubeSearchEvent = new YouTubeSearchEvent(YouTubeSearchEvent.CHANGE_VIDEO_READY);
                    eventObj.videoId = theOneVideoId;
                    dispatchEvent(event);

//2
    dispatchEvent(new YouTubeSearchEvent(YouTubeSearchEvent.CHANGE_VIDEO_READY, videoId));

根据我的自定义事件,我需要两个参数…但是我想知道第一个方法是否与第二个不同。。。

package com.search.events
{
    import flash.events.Event;

    public class YouTubeSearchEvent extends Event
    {
        public static const FEED_VIDEO_READY:String="feed_video_ready";
        public static const CHANGE_VIDEO_READY:String="change_video_ready";

        public var videoResult:*;

        public function YouTubeSearchEvent(type:String, videoResult:*)
        {
            super(type);

            this.videoResult=videoResult;

        }
    }
}

这个问题来自我的另一篇文章 AS3 Pass Custom Event Data Question