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Question

一个页面打开30秒，数据库更新  （ 没有触发事件）

Answer 1

在window的load事件中触发
window.onload = function () {
   var i = 0;
   if (i <= 30) {
      setTimeout(function () {
         i++;  
         ajax("更新数据库")       
      }, 1000);
    }
};
你的30秒事件是否执行，ajax是否请求正常，后台代码可有执行

Answer 2

ajax("更新数据库")    这里面怎么写？？

Answer 3

用AJAX异步请求数据库，1楼写的伪代码呢

Answer 4

没学ajax,代码贴出来。谢谢   急急！  

Answer 5

第一步引用 jquery 包 1.2.6 以上版本  function AddContentSave() {
            var CContent = $("#txtContent").val();
            if (CContent == null || CContent == "" || CContent.length <= 0) {
                alert("回复信息不能为空!");
                return;
            }
            if (CContent.length > 1500) {
                alert("回复信息不能超过1500字!");
                return;
            }
            $.ajax({
                type: "post",
                url: "/Action/Ajax.aspx",///这里是处理页面
                data: {
                    action: "saveContentReply",
                    ContentID: contentID,
                    companyID: companyID,
                    userID: userid,
                    CContent: escape(CContent),
                    SubID:SubID
                },
                cache: false,
                success: PostCallBack,
                error: AjaxFailCallBack
            });
        }
        //保存AJAX回调
        function PostCallBack(data) {
            if (data == null || data.toString() == null || data.toString() == "" || data.toString().length <= 0) {
                alert("添加失败!");
                return;
            }
            if ($("#contentreply").css("display") == "none")
                $("#contentreply").css("display", "block");
            var content = data.toString().split("^!*@");
            $("#replylist").prepend(content[0]);
            $("#txtContent").val("");
            $("#replynumber").html(parseInt($("#replynumber").text()) + 1)
            $("#replynumber1").html(parseInt($("#replynumber1").text()) + 1)
            alert(content[1]);
            $("#fEmpty").text("");
        }
        //Ajax发生错误时
        function AjaxFailCallBack(XMLHttpRequest, textStatus, errorThrown) {
            alert("操作失败");
        }
        //刷新页面
        function RefreshUserContentReply() {
            $.ajax({
                type: "post",
                url: "/Action/Ajax.aspx",
                data: {
                    action: "getContentNewsReply",
                    ContentID: contentID,
                    companyID: companyID,
                    userID: userid,
                    ReplyID: ReplyID,
                    SubID:SubID
                },
                cache: false,
                success: PostRefrisehCallBack,
                error: AjaxRefrisehFailCallBack
            });
        }
        function AjaxRefrisehFailCallBack(XMLHttpRequest, textStatus, errorThrown) {
        }
          
        //刷新页面回调
        function PostRefrisehCallBack(data) {
            if (data == null || data.toString() == null || data.toString() == "" || data.toString().length <= 0)
                return;
            var content = data.toString().split("^!*@");
            $("#replylist").prepend(content[0]);
            ReplyID = content[1];
            $("#replynumber").html(parseInt($("#replynumber").text()) + parseInt(content[2]))
            $("#replynumber1").html(parseInt($("#replynumber1").text()) + parseInt(content[2]))
        }
         $(function() {
            setInterval(RefreshUserContentReply, 10000);
        });
示例处理页接收参数的方法 ajax.aspx
string action = Request.Params["action"].ToString();话到这份上，你必须会了