j

.       var data = "First second thind";
        var reCat = /\b(\S+)\b/g;
        var arrdata = data.match(reCat);

        for (var i = 0; i < arrdata.length; i++) {
            alert(arrdata[i]);
        }
//        var sToMatch = "#123456789";
//        var reNumbers = /#(\d+)/;
//        reNumbers.test(sToMatch);
//        alert(RegExp.$1);

//        var sToChange = "1234 5678";
//        var reMatch = /(\d{4}) (\d{4})/;
//        var sNew = sToChange.replace(reMatch, "$2 $1");
//        alert(sNew);
//        //alert($1); alert($2);


        function isNumber(v, Validtype) {
            if (!Validtype) Validtype = "float";
            switch (Validtype.toString().toLowerCase()) {
                case "uint":
                    var regUInt = /^\d$/;
                    return regUInt.test(v);
                    break;
                case "int":
                    var regUInt = /^-?\d$/;
                    return regUInt.test(v);
                    break;
                case "ufloat":
                    var regUInt = /^\d+(\.?\d)?$/;
                    return regUInt.test(v);
                    break;
                case "float":
                    var regUInt = /^-?\d+(\.?\d)?$/;///^(-?\d+)(\.\d+)?$/
                    return regUInt.test(v);
                    break;
            }
        }
        function checkUserName(v) {
            var reg = /^[a-zA-Z0-9]{1}([a-zA-Z0-9]|[._]){4,15}/;
            return reg.test(v || "");
        }
        window.onload = function() {
            alert(isNumber('1.322.322'));
        }