复制代码 代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApp.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<script src="https://www.jb51.net/jquery-1.7.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
function aa() {
$.ajax({
url: "http://localhost:12079/WebForm2.aspx",
data: "p1=1&p2=2&callback=?",
type: "post",
processData: false,
timeout: 15000,
dataType: "jsonp", // not "json" we'll parse
jsonp: "jsonpcallback",
success: function(result) {
alert(result.value1);
}
});
}
</script>
<title></title>
</head>
<body>
<form runat="server">
<div>
</div>
</form>
<p>
<input type="button" value="button" /></p>
</body>
</html>
服务器端代码
复制代码 代码如下:
public partial class WebForm2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string callback = Request["callback"];
string v1="1";
string v2="2";
string response = "{\"value1\":\"" + v1 + "\",\"value2\":\"" + v2 + "\"}";
string call = callback + "(" + response + ")";
Response.Write(call);
Response.End();
}
}
客户端页面和服务器端页面在两个项目中，以便进行跨域调用测试。
跨域实例代码（需要加载jquery，页面为utf-8编码）：
复制代码 代码如下:
<!--拉勾招聘数据-->
<script type="text/javascript">
function success_jsonpCallback(data){
var html = '';
var pos = '';
html += '<ul>';
jQuery.each(data, function(k, v) {
if(k<10){
pos = '【' + v.city+ '】' + v.positionName + '('+ v.salary +') - '+v.companyName;
if(pos.length > 20){
pos = pos.substring(0,19)+'...';
}
html += '<li><a href="'https://www.jb51.net/+v.posiitonDetailUrl+'" target="_blank" title="【' + v.city+ '】' + v.positionName + '('+ v.salary +') - '+v.companyName+'">'+pos+'</a></li>';
}
});
html += '</ul><div><a href="https://www.lagou.com/jobs/list_%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91" target="_blank">更多</a></div>';
jQuery('#lagouData').html(html);
}
function getLagouData() {
jQuery.ajax({
async:false,
url: "http://www.lagou.com/join/listW3cplus?kd=%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91",
type: "GET",
dataType: "jsonp",
jsonpCallback: 'success_jsonpCallback',
contentType: "application/jsonp; charset=utf-8",
success: function(data) {
success_jsonpCallback(data);
}
});
}
getLagouData();
</script>
<div></div>
jsonp代码：
复制代码 代码如下: