$(function () {
        $("#search").click(function () {
            var keyword  = document.forms['theForm'].elements['keyword'].value;
var option='';
            $.ajax({
                url:"zhannei.php?act=search",
                type:"post",
                data:{param:keyword},
                datatype:"json",
                success:function(data){

                    if (data) {
               $.each(JSON.parse(data), function (key, value) {

                            option += '+ value.user_name + ''
                        });
                        $("#result").html(option);
                    }
                }

            });

        });


    })