key bind script for jquery

jQueryKeyBind.js

function ready_keyBind(){
    $(function(){

        var schema = [
            {key:'s', fn: d_save, args: []}
        ];
        
        for(var k of schema)
            $.ctrl(k.key,k.fn,k.args);
    })
}

$.ctrl = function(key, callback, args) {
    $(document).keydown(function(e) {
        if(!args) args=[]; // IE barks when args is null 
        if(e.keyCode == key.toUpperCase().charCodeAt(0) && e.ctrlKey) {
            e.preventDefault();
            callback.apply(this, args);
            return false;
        }
    });        
};