JavaScript KeyCode值是“未定义的”在Internet Explorer 8中 [英] JavaScript KeyCode Values are "undefined" in Internet Explorer 8

问题描述

我遇到了一些我编写过的JavaScript问题，但只能使用Internet Explorer 8.我在Internet Explorer 7或更早版本或Mozilla Firefox 3.5或更早版本上执行此操作时没有问题。当我在Internet Explorer 8上使用兼容模式时，它也可以正常执行。

I'm having trouble with some JavaScript that I've written, but only with Internet Explorer 8. I have no problem executing this on Internet Explorer 7 or earlier or on Mozilla Firefox 3.5 or earlier. It also executes properly when I use compatibility mode on Internet Explorer 8.

当用户在文本框中输入值时，我正在做的是覆盖Enter键击。所以在我的元素上我有这个：

What I'm doing is overriding the Enter keystroke when a user enters a value into a textbox. So on my element I have this:

<asp:TextBox ID="ddPassword" runat="server" TextMode="Password" onkeypress="doSubmit(event)" Width="325"></asp:TextBox>

然后我有以下JavaScript方法：

And then I have the following JavaScript method:

function doSubmit(e)
{
    var keyCode = (window.Event) ? e.which : e.keyCode;
    if (keyCode == 13)
        document.getElementById("ctl00_ContentPlaceHolder1_Login").click();  
}

同样，这一切都适用于几乎所有其他浏览器。 Internet Explorer 8只是让我很难过。

Again, this all works fine with almost every other browser. Internet Explorer 8 is just giving me a hard time.

非常感谢您提供的任何帮助。谢谢！

Any help you might have is greatly appreciated. Thanks!

更新：感谢大家的快速反馈。 Chris Pebble和Bryan Kyle都协助解决了这个问题。我已经授予布莱恩答案以帮助他的声誉。谢谢大家！

UPDATE: Thanks everyone for your quick feedback. Both Chris Pebble and Bryan Kyle assisted with this solution. I have awarded Bryan the "answer" to help with his reputation. Thanks everyone!

推荐答案

在IE8下看起来像 keyCode 属性 window.Event 是 undefined 但 window.event的相同属性（注意小写 e ）具有值。您可以尝试使用 window.event 。

It looks like under IE8 the keyCode property of window.Event is undefined but that same property of window.event (note the lowercase e) has the value. You might try using window.event.

function doSubmit(e)
{
   var keyCode = (window.event) ? e.which : e.keyCode;
   if (keyCode == 13)
      document.getElementById("ctl00_ContentPlaceHolder1_Login").click();  
}

这篇关于JavaScript KeyCode值是“未定义的”在Internet Explorer 8中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！