"Learn the trick to replace the Ctrl + N shortcut in Firefox and initiate an AJAX request

Note: The answer provided by Juan Mendes has been selected as the best answer for my situation due to its usefulness. AxGryndr also offered valuable information, so I recommend reading both answers as they are beneficial in different scenarios. Thank you to both contributors for assisting with this issue.

I previously posted a similar question on this platform, which helped solve the initial part of my problem. However, I am now facing another challenge. I am trying to make Ctrl + N trigger a script containing AJAX, but when I run the .get function, it triggers the default action instead. Does anyone know of a workaround for this issue?

The following code snippet demonstrates the problem I am encountering:

function checkkey(e)
{
    if(e.ctrlKey && e.keyCode == 'N'.charCodeAt(0) && !e.shiftKey && !e.altKey)
    {
        try{e.preventDefault();}catch(ex){}
        var m_objXMLHttpReqObj = new XMLHttpRequest();
        m_objXMLHttpReqObj.open("GET", "", false);
        m_objXMLHttpReqObj.send();
    }
}

For a visual representation of my issue, you can view this JSFIDDLE.

javascriptajaxfirefox

Answer №1

Your previous code was not effectively preventing the default behavior.

function checkkey(e) {
    if(e.ctrlKey && e.keyCode == 'N'.charCodeAt(0) && !e.shiftKey && !e.altKey) {
        e.preventDefault();
        // AJAX request can now be executed

It appears that the asynchronous nature of your AJAX call caused interference with stopping the default behavior. Sending a synchronous AJAX request is discouraged as it halts the browser and omitting the URL triggers an error. Once you adjust your settings to include a proper URL and make the request asynchronous, it should work in Firefox as intended.

Below is the updated functional code:

function checkkey(e) {
    if(e.ctrlKey && e.keyCode == 'N'.charCodeAt(0) && !e.shiftKey && !e.altKey){
        e.preventDefault();
        var m_objXMLHttpReqObj = new XMLHttpRequest();
        m_objXMLHttpReqObj.open("GET", 
                // Specify the URL
                "/echo/html/", 
                // Set as asynchronous
                true);
        m_objXMLHttpReqObj.send("");
    }
}

In Chrome, adding a console.log statement at the beginning of your handler reveals that the handler does not trigger. This means Chrome does not recognize the CTRL+N combination, rendering it unactionable. It's similar to how Windows applications do not receive notifications for CTRL+ALT+DEL.

If cross-browser functionality is essential, consider using an alternative combination like ALT+SHIFT+N, avoiding conflicts with fundamental browser shortcuts.

Answer №2

It appears that the issue lies in the timing of checking for a keypress and executing the action after the keyup event. To address this, you can modify your code to listen for the keydown event of Ctrl+N for better results. Here's an example:

var pKey
$(function() {
$(window).keydown(function(e) {
    if(e.which == 17) {
        pKey = e.keyCode;
    }
    else {
        if(pKey == 17 && e.keyCode == 78) {
            e.preventDefault();
            console.log(e);
        }
    }
});
});

I have introduced a global variable to store the keycode for Ctrl key (keyCode 17), followed by capturing the keycode 78 for the N key on the second keydown event. Previously, just using e.preventDefault() was insufficient to prevent opening a new window, hence the addition of e.stopPropagation(), e.stopImmediatePropagation(). You can eliminate the console.log(e) as it is no longer necessary according to Juan M's recommendations.

Please note: Firefox has adjusted its key binding priority from System>Website>Firefox to System>Firefox>Website due to complaints about websites taking over shortcuts. This means that even if your website binds Ctrl+N, Firefox now prioritizes its own shortcut handling for opening new windows.

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