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<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="location.aspx.cs" Inherits="WebRole1.location" %>
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
else {
alert("your browser doesn't support AJAX");
}
}
function startRequest(url){
createXMLHttpRequest();
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange =callBack ;
xmlHttp.send(null);
}
function callBack() {
if (xmlHttp.readyState == 4) {
if (xmlHttp.status == 200) {
var res = xmlHttp.responseText;
window.alert(res);
} else {
window.alert("error");
}
}
}
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(getPostion);
}
}
function getPostion(position) {
var lat = position.coords.latitude;
var lon = position.coords.longitude;
var url = "location.aspx?lat=" + lat + "&lon=" + lon;
startRequest(url);
}
</script>
<asp:TextBox ID="text" runat="server" CssClass="text" MaxLength="100" Columns="40" TextMode="MultiLine"></asp:TextBox>
<asp:Button ID="textSubmit" runat="server" CssClass="textSubmit" Text="submit" OnClientClick="getLocation()" OnClick="Post"/>
<hr />
</asp:Content>
[code=C#]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebRole1
{
public partial class location : System.Web.UI.Page
{
protected void Post(object sender, EventArgs e)
{
Response.Write("<script>alert(" + Request.QueryString["lat"] + "); </script>");
}
}
}
alert出来的值一直是undifined,求解啊!~ 在线等