[code="javascript"]
function a()
{
}
function b()
{
}
a(b)
[/code]
a 声明时的参数列表里什么也没有,那调用的时候把b方法名放进去干什么?
是不是回调函数, 当A执行完毕后,以返货结果为B的参数调用B?
[b]问题补充：[/b]
看了楼下的说法,可奇怪的是公司那个方法就是什么也没写啊
而且他居然是调用了一个.NET里的方法方法上边写着
[AjaxPro.AjaxMethod]
我觉得可能是不是加了这句话,那个方法就能在javascript里跟.net里共享了,
可那方法确实没有参数啊
[b]问题补充：[/b]
[b][size=xx-large]没有什么都没有[/size][/b]
[code="c#"]
public String getValue_XY()
{
string str_xy = "";
object str_X = "", str_Y = "", tableID = "", deftime = 0, isInArea = 0;
object speed="",direction = "", state = "";
SqlConnection myCon = new SqlConnection(conString);
//SqlCommand myCmd = new SqlCommand("select GID,XMIN ,YMIN from G_res2_4m where GID="+count+"",myCon);
SqlCommand myCmd1 = new SqlCommand("select count(distinct phid) from phone ", myCon);//第一次读取数据库获取记录的条//where做筛选工作
try
{
myCon.Open();
string count = myCmd1.ExecuteScalar().ToString();
COUNT1 = count;
//COUNT1 = int.Parse(count);
//int aa = Convert.ToInt32(count);
//COUNT1 = Convert.ToInt64(count);
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
myCon.Close();
}
// SqlCommand myCmd2 = new SqlCommand("select PhID,x,y,speed,direction,state,DATEDIFF(second,GPSPositionTime,getdate())as a ,IsInArea from phone WHERE GPSPositionTime= (select max(GPSPositionTime) from phone)", myCon);//可以添加where语句实现对手机表的筛选工作
SqlCommand myCmd2 = new SqlCommand("select PhID,x,y,speed,direction,state,DATEDIFF(second,GPSPositionTime,getdate())as a ,IsInArea from phone WHERE GPSPositionTime in (select max(gpspositiontime) from phone group by phid)", myCon);//可以添加where语句实现对手机表的筛选工作
myCon.Open();
SqlDataReader dr = null;
dr = myCmd2.ExecuteReader();
//SqlConnection myCon3 = new SqlConnection(conString);
//SqlConnection myCon4 = new SqlConnection(conString);
while (dr.Read())
{
string tableid = "";
//string str_XY="";//X,Y用"30000,40000"格式表示
tableID = dr["PhID"];
tableid = tableID.ToString();
str_userid += getUserinfo(tableid);
/* SqlCommand myCmd3 = new SqlCommand("select userid ,name,sex,idcard,usertype from user_info where phone='" + tableid + "'", myCon3);
myCon3.Open();
SqlDataReader dr3 = null;
dr3 = myCmd3.ExecuteReader();
string username2="";
while (dr3.Read())
{
object userid1 = dr3["userid"];
object username1 = dr3["name"];
object sex1 = dr3["sex"];
object idcard1 = dr3["idcard"];
object usertype1 = dr3["usertype"];
username2 = username1.ToString().Trim();
int userid2 = Convert.ToInt32(userid1);
SqlCommand myCmd4 = new SqlCommand("select url from tree where id=(select pid from tree where id ='" + userid2.ToString() + "')", myCon4);
myCon4.Open();
SqlDataReader dr4 = null;
dr4 = myCmd4.ExecuteReader();
while (dr4.Read())
{
object url1 = dr4["url"];
url2 = url1.ToString().Trim();
}
dr4.Close();
myCon4.Close();
str_userid += userid2.ToString().Trim() + "," + sex1.ToString().Trim() + "," + idcard1.ToString().Trim() + "," + usertype1.ToString().Trim() + ";";
}
dr3.Close();
myCon3.Close();*/
str_X = dr["x"]; //读取数据库中的GPS坐标
str_Y = dr["y"];
deftime = dr["a"];
isInArea = dr["IsInArea"];
speed=dr["speed"];
direction=dr["direction"];
state=dr["state"];
str_xy += tableID.ToString() + "," + str_X.ToString() + "," + str_Y.ToString() + "," + username2 + "," + deftime.ToString() + "," + isInArea.ToString() +","+speed.ToString()+","+direction.ToString()+","+state.ToString()+"," +";";
// str_url += url2 + ",";
}
dr.Close();
myCon.Close();
//dr.Close();
//myCon.Close();
//str_xy = tableID.ToString()+","+str_X.ToString() + "," + str_Y.ToString();
//count++;
return Convert.ToString(str_xy);
}
[/code]
[code="javascript"]
//----------------------//这在里边需要指定个回调函数，以接受服务器端处理完后返回客户端结果
function getValue()
{
alert("能到达这里说明更新了");
_Default.getValue_XY(getXY_callback);
}
//-------------------------------------------------------------------------------------
function getXY_callback(response)//这个方法用户接受并处理服务器端返回的结果
[/code]
[b]问题补充：[/b]
[b][size=xx-large][align=center][color=red][/color]我也不知道,公司的人用.NET做的貌似有个什么东西,自动转,可也不是专门编.net的不知道啊.....我还想在里边找json呢,.net干本就用不着,js里连.NET的方法都有!暴汗[/align][/size][/b]
