IE9 Quirks模式不会将事件参数传递给事件处理程序 [英] IE9 Quirks mode doesn't pass event parameter to event handler

问题描述

我对IE9的怪癖模式有疑问.我已经将oncahnge事件注册到输入元素.到目前为止，该方法仍然有效，但是在IE9中，我们的网站进入了怪癖模式(保持原样)，并且出现了问题，即浏览器没有将event-Object传递到我的处理程序方法中.

I have a problem with the IE9 quirks mode. I have registered an oncahnge-event to an input element. This works so far, but in IE9 our site goes to quirks mode (it is as it is) and there I have the problem, that the browser doesn't pass the event-Object into my handler method.

document.getElementById("foo").onchange=myChangeMethod;
function myChangeMethod(event){
  //In IE 9 quirks mode "event" is undefined...
  if(event != undefined){
    //do stuff
  }
}

可以通过打开WebDeveloper控制台(F12)，将BrowserMode设置为"IE9"并将Document-Mode设置为(IE5-Quirks)在IE10中测试(我想在IE9中也可以).然后，浏览器的行为就像将本机IE9设置为"IE 9兼容模式"，将文档模式设置为"Quirks"一样.

This can be tested in IE10 (i suppose als in IE9) with opening the WebDeveloper Console (F12), Setting BrowserMode to "IE9" and the Document-Mode to (IE5-Quirks). Then the browser behaves the same like setting the native IE9 to "IE 9 Compatibility mode" and Document-Mode to "Quirks".

是否有可能以某种方式获取事件对象?

Is there a possibility to get the event-Object somehow?

提前谢谢！

推荐答案

我认为该事件在IE怪癖模式下是全局事件，因此检查事件参数并分配window.event是否为undefined即可解决问题:

I suppose the event is global in IE quirks mode, so checking the event parameter and assign window.event if it's undefined would solve the problem:

function myChangeMethod(evt){
  //In IE 9 quirks mode "event" is undefined...
  evt = evt || window.event; //<== HERE
  // additionally in quirks mode evt.target is evt.srcElement, 
  // so if needed you could assign evt.target as:
  var originator = evt.target || evt.srcElement;
  if(evt){
    //do stuff
  }
}

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