在IE 11中无法通过JavaScript禁用Ctrl + O. [英] can not disable Ctrl+O by JavaScript in IE 11

问题描述

我正在尝试在IE中禁用Ctrl + o组合键，以下代码在除IE 11之外的所有IE版本中都能正常工作，除非我在下面的代码中看到警告：

I'm trying to disable Ctrl+o key combination in IE, the following code works fine in all IE versions except IE 11 unless I do an alert as you see in code below:

document.onkeydown = function(event) {
    var x = event.keyCode;
    console.log(event.keyCode);
    console.log(event.ctrlKey);
    if ((x == 79) && (event.ctrlKey)) {
        if(navigator.userAgent.match(/rv:11.0/i)){
            alert('Disabled');
        }
        event.cancelBubble = true;
        event.returnValue = false;
        event.keyCode = 0;
        event.stopPropagation();
        event.preventDefault();

        return false;
    }
};

我想知道是否有其他人遇到同样的问题他们已经解决了。 :-)
谢谢。
Alex

I was wondering if anyone else is experiencing the same issue and they have solved it. :-) Thanks. Alex

推荐答案

我得出的结论与Alex&最大。在我的特定用例中，强制兼容模式会破坏其他功能。

I came to the same conclusion as Alex & Max. In my specific use case, forcing compatibility mode would break other features.

我相信在大多数情况下，确认对话框是最好的解决方法，因为它对用户来说仍然有点自然 - 除了所涉及的额外步骤。

I believe that in most cases a confirm dialog is the best workaround, as it still feels somewhat natural to the user - save for the extra step involved.

http://jsfiddle.net/dperish/sp72c0wt/3 /

HTML：

<h1>Demonstration of IE11 event bubbling issue</h1>

<label>Enable Workaround<input type="checkbox" id="enableWorkaround"></label>

    <p>Pressing CTRL-P or CTRL-O should NOT show the default open/print dialogs.  The only workaround seems to be to interrupt the main thread either with alert(), confirm(), or by hitting a breakpoint in a debugger. </p>

 <p>Unfortunately, a synchronous/blocking XHR call was not useful for this purpose.  Nor was using the browser-specific showModalDialog.</p>


<div id="output"></div>

Javascript：

Javascript:

function onKeyDown(e) {

    e = e || window.event;

    if ((e.keyCode === 79 || e.keyCode === 80) && e.ctrlKey) {

        e.preventDefault();
        e.stopPropagation();
        e.returnValue = false;

        if ($("#enableWorkaround").is(":checked")) {
            if (confirm("Run some custom method?")) {
                customMethod(e.keyCode);
            }
        }
        else {
            customMethod(e.keyCode);
        }
        return false;
    }

}

function customMethod(x) {
    $("#output").append("<p>CustomMethod Says: KeyCode = " + x + "</p>");
    return false;
}

$(document).ready(function() {

    $(document).on("keydown", function (e) {
        onKeyDown(e);
    });

});

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