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jquery ajax jsonp跨域调用实例代码
作者：佚名 责任编辑：admin 更新时间：2022-06-22
今天研究了AJAX使用JSONP进行跨域调用的方法，发现使用GET方式和POST方式都可以进行跨域调用,这里简单分享下，方便需要的朋友
客户端代码 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="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 id="form1" runat="server"> <div> </div> </form> <p> <input id="Button1" type="button" value="button" onclick="aa()" /></p> </body> </html> 服务器端代码 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）： 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="'+v.posiitonDetailUrl+'" target="_blank" title="【' + v.city+ '】' + v.positionName + '('+ v.salary +') - '+v.companyName+'">'+pos+'</a></li>'; } }); html += '</ul><div class="more-link"><a href="http://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 id="lagouData"></div> jsonp代码： 复制代码 代码如下: success_jsonpCallback([{"city":"广州","companyName":"POCO.CN","createTime":"15:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16868.html","positionAdvantage":"身处凝聚力团队，老城区上班交通便利，双休","positionName":"商业前端开发工程师","salary":"4k-7k"},{"city":"北京","companyName":"美通云动（北京）科技有限公司","createTime":"14:47发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16866.html","positionAdvantage":"Html5技术最棒的团队","positionName":"Web前端开发","salary":"4k-8k"},{"city":"杭州","companyName":"口袋购物","createTime":"14:42发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/13024.html","positionAdvantage":"广阔的发展平台、自我价值体现的地方","positionName":"web前端开发工程师","salary":"8k-12k"},{"city":"北京","companyName":"布丁移动","createTime":"14:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/1498.html","positionAdvantage":"三餐、周围美女如云","positionName":"Android开发工程师","salary":"10k-20k"},{"city":"北京","companyName":"布丁移动","createTime":"14:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/2539.html","positionAdvantage":"三餐，小桥流水人家，美女","positionName":"ios开发工程师","salary":"10k-20k"},{"city":"上海","companyName":"天天动听","createTime":"00:55发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/11494.html","positionAdvantage":"创业氛围 讲求小而美","positionName":"Android开发工程师","salary":"8k-16k"},{"city":"北京","companyName":"LBE安全大师","createTime":"11:39发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/5983.html","positionAdvantage":"五险一金 绩效奖金","positionName":"Android开发工程师","salary":"- 上一个程序编程： js判断客户端是iOS还是Android等移动终端的方法
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