Capslock检测在Javascript中不起作用

问题描述

我正在尝试检测Javascapslock，但是下面的代码始终返回false.Firefox和IE Web控制台表示未定义kc和sk.事件"e" 似乎包含一个which元素，但是 e.which 是未定义的.

I am trying to detect capslock in Javascript, however the code below always returns false. Firefox and IE web console says that kc and sk are undefined. Event "e" seems to contain a which element, however e.which is undefined.

我做错了什么吗?我正在使用devexpress(这可能是个问题吗?)

Am I doing something incorrect? I am using devexpress (could this be an issue?)

JavaScript

 <script>
    function isCapslock(e) {

      kc = e.keyCode ? e.keyCode : e.which;
      sk = e.shiftKey ? e.shiftKey : ((kc == 16) ? true : false);
      if (((kc >= 65 && kc <= 90) && !sk) || ((kc >= 97 && kc <= 122) && sk))
          return true;
      else
          return false;
      }

function showCapsWarning(e){

function showCapsWarning(e) {

        if (isCapslock(e)) {
            document.getElementById("capsWarningDiv").style.visibility = 'visible';
        }
        else {
            document.getElementById("capsWarningDiv").style.visibility = 'hidden';
        }

    }
</script>

aspx文件

<dx:ASPxTextBox ID="tbPassword" runat="server" ClientInstanceName="tbPassword" Password="True"                                              ToolTip="Please enter your password."
        Width="300px"
        ClientSideEvents-KeyPress="function(s,e) {showCapsWarning(e); }"
                                                    >

这是我从以下位置获得capslock javascript代码的地方: http://www.codeproject.com/Articles/17180/Detect-Caps-Lock-with-Javascript

This is where I got the capslock javascript code from: http://www.codeproject.com/Articles/17180/Detect-Caps-Lock-with-Javascript

推荐答案

e..我注意到事件对象正在使用以下路径以便到达which元素: event.htmlEvent.which .一旦我使用了 e.htmlEvent ，它便开始正常工作.

e.which was undefined within the web developer console. I noticed that the event object was using the following path in order to get to the which element: event.htmlEvent.which. Once I used e.htmlEvent it began to work correctly.

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