JS Связывание

bind.js

if (typeof Function.prototype.bind === 'undefined') {
    Function.prototype.bind = function (thisArg) {
        var
            fn = this
            , slice = Array.prototype.slice
            , args = slice.call(arguments, 1)
        ;
        
        return function () {
            return fn.apply(thisArg, args.concat(slice.call(arguments)));
        };
    };
}