Keycodes for meta keys[backspace][ctrl][alt] with upper and lower case letters

Question

How to get keycode on keypress?

I know that keydown and keyup will give keycodes for all keys but without considering the case for alphabets and also keypress will give case sensitive keycodes but donot give keycodes for meta keys like backspace, alt, ctrl, enter and shift. is there any method to get all the keycodes including meta and case sensitive keycodes? in javascript

Answer 1

I found a work around for this problem.

Events execute in this order

1, Key down
2, key press
3, key up

Steps to solve problem

1, use two events, key down and key press
2, cancel event in keydown if keycode is in range of capital letters
3, execute event in key up

var cancelKeypress = false;
$("body").keydown(function(event){
    event = event || window.event;
    var eliminateKeys = [];
    for (var i = 65; i <= 90; i++) { //Capital Letters [A-Z]
        eliminateKeys.push(i);
    }
    eliminateKeys.push(32); // space
    cancelKeypress = eliminateKeys.indexOf(event.keyCode) == -1 ? false : true;
    if (cancelKeypress) {
        //return false;
    }
    else{
        Main.processTrigger(event);// your processtrigger function
    }
}); 
$("body").keypress(function(event){
    if (cancelKeypress) {
        Main.processTrigger(event); // your processtrigger function
        console.log(event);
    }
    else{
        //return false;
    }
});