Question

我试图在我的网站上增加主要短机,使快速导航成为可能。然而,由于我尝试了Alt +X,Im 陷入一个轻微的问题。这项活动只进行罚款,并按原样转载<代码>false,但浏览器的卷宗号是无所不在的。 I ve还尝试了preventDefault方法,但没有改动。

文字的削减版是:

document.documentElement.onkeydown = function(e) {
    e = e || window.event;
    switch( e.keyCode || e.which) {
        // some cases here - most notably:
        case 116: // F5 key
            if( activeFrame) {
                activeFrame.contentWindow.location.reload();
                // reloads an iframe if one is active
                return false;
            }
            break;
        // more cases...
        case 88: // X key
            if( e.altKey) {
                // do something
                return false;
            }
    }
}

如上所述,压倒了F5关键工程的违约行动――浏览器只在没有机体的情况下重载该页。我看不出如何防止菜单出现在Alt/kbd>+X。

Answer 1

我实际上拥有一个网状,与CTRL短击钥匙一道工作,但随后决定I d为cl,并使用<条码>检索钥匙/代码>属性,并与IE一起处理这一具体问题。

The problem with going to CTRL shortcut keys is that many of those are more standard/useful across many applications (eg: cut, copy, paste, select all).

Ctrl+Alt相当安全,但需要用户方面做更多的工作。

我往往试图遵守《反恐法》,对《反恐法》进行 short击。

Demo of CTRL + A/CTRL + F being cancelled successfully: http://jsfiddle.net/egJyT/

。

Answer 2

use stopPropagation(e); instead of preventDefault method

function stopPropagation(e)
{
    e = e || event;/* get IE event ( not passed ) */
    e.stopPropagation? e.stopPropagation() : e.cancelBubble = true;
}

<rel=“nofollow noreferer”> 参考链接

Another SO question which mentions that preventDefault has issue in IE.

UPDATE

Try using below code as per MSDN Reference

event.returnValue=false;

http://www.quirksmode.org/js/keys.html“rel=“nofollow noreferer”>Detecting keystrokes 。

www.un.org/Depts/DGACM/index_spanish.htm 某些一般用途:

Generally, Mac is less reliable than Windows, and some keys cannot be detected.
Explorer doesn t fire the keypress event for delete, end, enter, escape, function keys, home, insert, pageUp/Down and tab.
Onkeypress, Safari gives weird keyCode values in the 63200 range for delete, end, function keys, home and pageUp.Down. The onkeydown and -up values are normal.
Alt, Cmd, Ctrl and Shift cannot be detected on Mac, except in Opera. However, you can always use the altKey, ctrlKey, and shiftKey properties.

Answer 3

Beware that if you manage to successfully prevent the browser from detecting a key combination you may make your page unusable for some users. Many screen readers have reserved almost any key you can think of to control the screen reader and if your page was accessible using a screen reader before you added the shortcut key code, it may be completely un-accessible users needing screen readers after you add it.

http://www.cs.tut.fi/~jkorpela/forms/accesskey.html”rel=“nofollow” http://www.wats.ca/show.php?contentid=43“rel=“nofollow”>,在你投入过多时间讨论这一问题之前,有关Curd Keystroke Combinations 的文章。

UPDATE

友情链接