Question

29

How to disable the function of ESC key in JavaScript?

rated 0 times [ 31] [ 2] / answers: 1 / hits: 33248 / 12 Years ago, wed, january 30, 2013, 12:00:00

In my chat application there are some text fields which gets the user login details.

When filling the user details, if a user suddenly pressed the ESC key, the data will be lost.

If need to disable the function of ESC key, which event I need to use? How can I do that.

My JavaScript code is:

function esc(e){

    e = e || window.event || {};

    var charCode = e.charCode || e.keyCode || e.which;

    if(charCode == 27){

    return false;

    }

}

I searched a lot in Stack Overflow and Google; nothing worked. Please, can anyone help me to do that?

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daquanmilesw

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answered 12 Years ago helenat · Accepted Answer

I got the solution to control the F5 , Esc , BackSpace(BS) keys with the following code.

My Java Script code will be ,

document.attachEvent(onkeydown, win_onkeydown_handler);



function win_onkeydown_handler() {

    switch (event.keyCode) {



    case 116 : // 'F5'

         event.returnValue = false;

         event.keyCode = 0;

         break;  



    case 27: // 'Esc'

        event.returnValue = false;

        event.keyCode = 0;

        break;



    case 08: // 'BackSpace'

        if (event.srcElement.tagName == INPUT

                || event.srcElement.tagName == TEXTAREA) {

        } else {

            event.returnValue = false;

            event.keyCode = 0;

        }

        break;



    }

}

Thanks who are all supported me to do this and for your suggestions.