如何在 Javascript 中创建自定义事件类? [英] How do I create a custom event class in Javascript?

问题描述

如何创建类似于 ActionScript 的自定义事件类?我的意思是一个类，我可以用它来触发我自己的事件，发送必要的数据.

How do I create a custom event class similar to ActionScript? What I mean by that is a class that I can use to fire off my own events, send the necessary data.

我不想使用像 YUI 或 jQuery 这样的第三方库来做这件事.我的目标是能够发送如下所示的事件:

I don't want to use third-party libraries like YUI or jQuery to do it. My goal is to be able to send a event that looks like this:

document.addEventListener("customEvent", eventHandler, false);

function eventHandler(e){
    alert(e.para1);
}

document.dispatchEvent(new CustomEvent("customEvent", para1, para2));

请不要使用第三方库解决方案.

Please no third-party library solutions.

推荐答案

对我有用的方法是调用 document.createEvent()，初始化它并使用 window.dispatchEvent() 调度它.

A method that worked for me was to call document.createEvent(), init it and dispatch it with window.dispatchEvent().

  var event = document.createEvent("Event");
  event.initEvent("customEvent", true, true);
  event.customData = getYourCustomData();
  window.dispatchEvent(event);

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