Cancel the keydown in HTML

Question

How can I cancel the keydown of a specific key on the keyboard, for example(space, enter and arrows) in an HTML page.

Answer 1

I only develop for IE because my works requires it, so there is my code for numeric field, not a beauty but works just fine

    $(document).ready(function () {

    $("input[class='numeric-field']").keydown(function (e) {

        if (e.shiftKey == 1) {
            return false
        }

        var code = e.which;
        var key;

        key = String.fromCharCode(code);

        //Keyboard numbers   
        if (code >= 48 && code <= 57) {
            return key;
        } //Keypad numbers
        else if (code >= 96 && code <= 105) {
            return key
        } //Negative sign
        else if (code == 189 || code == 109) {
            var inputID = this.id;
            var position = document.getElementById(inputID).selectionStart
            if (position == 0) {
                return key
            }
            else {
                e.preventDefault()
            }
        }// Decimal point
        else if (code == 110 || code == 190) {
            var inputID = this.id;
            var position = document.getElementById(inputID).selectionStart

            if (position == 0) {
                e.preventDefault()
            }
            else {
                return key;
            }
        }// 37 (Left Arrow), 39 (Right Arrow), 8 (Backspace) , 46 (Delete), 36 (Home), 35 (End)
        else if (code == 37 || code == 39 || code == 8 || code == 46 || code == 35 || code == 36) {
            return key
        }
        else {
            e.preventDefault()
        }
    });

});