Метка: jQuery

CSS

jQuery.fn.ForceNumericOnly = function() {
    return this.each(function() {
        jQuery(this).keydown(function(e) {
            var key = e.charCode || e.keyCode || 0;
            // allow backspace, tab, delete, enter, arrows, numbers and keypad numbers ONLY
            // home, end, period, and numpad decimal
            return (
                key == 8 || 
                key == 9 ||
                key == 13 ||
                key == 46 ||
                key == 110 ||
                key == 190 ||
                (key >= 35 && key <= 40) || (key >= 48 && key <= 57) || (key >= 96 && key <= 105));
        });
    });
};

Использовать так:

jQuery(document).ready(function($){
    $("#yourTextBoxName").ForceNumericOnly();
});

Источник:
https://stackoverflow.com/questions/995183/how-to-allow-only-numeric-0-9-in-html-inputbox-using-jquery