source: trunk/prototype/app/plugins/alphanumeric/jquery.alphanumeric.js @ 5341

(function($){

        $.fn.alphanumeric = function(p) { 

                p = $.extend({
                        ichars: "!@#$%^&*()+=[]\\\';,/{}|\":<>?~`.- ",
                        nchars: "",
                        allow: ""
                  }, p);        

                return this.each
                        (
                                function() 
                                {

                                        if (p.nocaps) p.nchars += "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
                                        if (p.allcaps) p.nchars += "abcdefghijklmnopqrstuvwxyz";
                                        
                                        s = p.allow.split('');
                                        for ( i=0;i<s.length;i++) if (p.ichars.indexOf(s[i]) != -1) s[i] = "\\" + s[i];
                                        p.allow = s.join('|');
                                        
                                        var reg = new RegExp(p.allow,'gi');
                                        var ch = p.ichars + p.nchars;
                                        ch = ch.replace(reg,'');

                                        $(this).keypress
                                                (
                                                        function (e)
                                                                {
                                                                
                                                                        if (!e.charCode) k = String.fromCharCode(e.which);
                                                                                else k = String.fromCharCode(e.charCode);
                                                                                
                                                                        if (ch.indexOf(k) != -1) e.preventDefault();
                                                                        if (e.ctrlKey&&k=='v') e.preventDefault();
                                                                        
                                                                }
                                                                
                                                );
                                                
                                        $(this).bind('contextmenu',function () {return false});
                                                                        
                                }
                        );

        };

        $.fn.numeric = function(p) {
        
                var az = "abcdefghijklmnopqrstuvwxyz";
                az += az.toUpperCase();

                p = $.extend({
                        nchars: az
                  }, p);        
                        
                return this.each (function()
                        {
                                $(this).alphanumeric(p);
                        }
                );
                        
        };
        
        $.fn.alpha = function(p) {

                var nm = "1234567890";

                p = $.extend({
                        nchars: nm
                  }, p);        

                return this.each (function()
                        {
                                $(this).alphanumeric(p);
                        }
                );
                        
        };      

})(jQuery);