html:            

            <form  name="formadd" action="">

             First name: <input type="text" name="FirstName" value="Bill" /><br />

             Last name: <input type="text" name="LastName" value="Gates" /><br />

             <input  type="button" value="保存" class="tianjia"/>

            </form>



           jquery:

          <script>

          $(function (){

          $(".tianjia").click(function (){            

             $.post("daili.php?act=postaddactivewl",$('[name=formadd]').serialize(),function (data){

             alert(data);

        },"text");

        });

        });

        </script>    





             php服务端：



        print_r($_POST['FirstName']);