Ajax效果--个人收藏

$.ajax({
             url: "../../../Tools/WeChatMenu.ashx?action=get_menu",
             type: "post",
             data: { "appid": $("#use").attr("app_id") },
             beforeSend: function (XMLHttpRequest) {
                showout(1,"正在请求数据...");
             },
             success: function(data) {
                 hiddenoutbox(); //成功后隐藏弹出层
                 var json = $.parseJSON(data);
                 var bizmenu = $("#bizmenu"),
	                dialogBox = $("#dialogBox")
                 if (json.msg == 1) {
                     $.each(json.msgbox, function(i, item) {
                         $("#level1").find(".nav_btn").html(item.data_name);
                         $("#level1").find(".nav_btn").attr("db_id", item.id);
                         $("#level1").children().attr("id", "level1_" + i);
                         bizmenu.append($("#level1").html());
                         $("#level1").attr("data-domid", i);
                         if (item.stair_list != null) //有子菜单
                         {
                             var bizmenu_name = $("#bizmenu_name"),
		                    dialogBox = $("#dialogBox"),
			                menuHtml = $("#level2_1").html();
                             $.each(item.stair_list, function(j, item2) {
                                 $("#level1_" + i).find(".sub_nav_list").append(menuHtml);
                                 $("#level2_1_1").attr("id", "level2_1_" + j);
                                 $("#" + "level2_1_" + j).find(".level2name").html(item2.data_name);
                                 $("#" + "level2_1_" + j).find(".level2name").attr("db_id", item2.id);

                             })

                         }
                     })
                 }else
                 {
                    showout(0,json.msgbox);
                    window.setTimeout(hiddenoutbox,3000); 
                 }
             },
             error:function(XMLHttpRequest, textStatus, errorThrown){
                showout(0,"状态：" + textStatus + "；出错提示：" + errorThrown);
                window.setTimeout(hiddenoutbox,3000); 
             }
         })

　　

弹出层样式：

.showoutbox{300px; min-height:32px; position:absolute; top:0; z-index:300; background:#0F0; display:none; text-align:center; line-height:32px;color:#fff}
.underbox{100%; background:#000; filter: alpha(opacity=0);-moz-opacity: 0;opacity: 0; z-index:299; position:absolute; left:0; top:0; display:none;}

弹出层方法：

//弹出层方法
	    function showout(status,datatext){
		    $(".showoutbox").html(datatext);
		    var myleft=($(window).width()-300)/2+'px';		
		    if(status==1)
			    $(".showoutbox").css({left:myleft,display:'block',background:'#529E45'});
		    else if(status==0)
			    $(".showoutbox").css({left:myleft,display:'block',background:'#ED973A'});
		    $(".underbox").css({height:$(window).height()+'px',display:'block'});
	    }
	    //关闭弹出层
	    function hiddenoutbox(){
	        $(".showoutbox").text("");
		    $(".showoutbox").removeAttr("style");
		    $(".underbox").removeAttr("style");
	    }

//status=0或1，代表失败或成功，datatext=提示的文本

层：

<div class="showoutbox"></div>
<div class="underbox"></div>

//不能放到任何div下，直接放到body下