Numeric validation on textbox/input on keydown event using JQuery

This is simple way to implement the numeric validation on textbox or input control using jquery. Firstly you need to use jquery selector for binding the keydown event to input control. Once you bind it it will only allow numeric keys and reject the alphabetical keys. Following is the code snippet of the numeric validation using Jquery.

 $(document).ready(function () {
        $("#MobileNo").keydown(function (e) {
            // Allow: backspace, delete, tab, escape, enter and .
            if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
            // Allow: Ctrl+A
            (e.keyCode == 65 && e.ctrlKey === true) ||
            // Allow: home, end, left, right, down, up
            (e.keyCode >= 35 && e.keyCode <= 40)) {
                // let it happen, don't do anything
                return;
            }
            // Ensure that it is a number and stop the keypress
            if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
                e.preventDefault();
            }
        });
    });

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