Prevent BACKSPACE from navigating back with jQuery (Like Google's Homepage)

Question

Notice while on Google\'s homepage, with no focus on any element, pressing BACKSPACE will put the focus into the search toolbar instead of navigating back.

How can I

Answer 1

Handled readonly text boxes also

$(document).keydown(function (e) {
        var activeInput = $(document.activeElement).is("input[type=text]:not([readonly]):focus, textarea:focus");
        if (e.keyCode === 8 && !activeInput) {
            return false;
        };
    });