<!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"> <title></title></head><body> <form id="form1" runat="server"> <div> </div> <input type="button" value="click" id="btn" /> </form></body><script type="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script><script type="text/javascript"> $("#btn").click(function () { jQuery.ajax({ type: "post", url: "ajax_model.aspx", data: "TYPE=SCRIPT", dataType: "script", success: function (mes) { //MES是获得返回的数据,可以通过dataType进行设置返的数据类型 //if (mes == "Y") { // alert("进入了switch的Y代码块"); //} else { // alert("进入了switch的default代码块"); //} //document.write(mes); } }); });</script></html>