JQuery

    $('#submit').click(function () {
        //去除所有空格
        String.prototype.NoSpace = function () {
            return this.replace(/s+/g, "");
        };

        var user = $('#user').val().NoSpace();
        var pwd = $('#pwd').val().NoSpace();

        if (user == "" || pwd == "") {
            return;
        }else {
            alert(user + ',' + pwd);
        }
    });