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POChange css in jquery ajax with asp.net
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  1. POChange css in jquery ajax with asp.net
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    copied!<p>I wolud like to get results: 2222 .but i can not get the results now.Output '3333' always. can anyone help me out ?thank you very much!</p> <pre><code>&lt;head runat="server"&gt; &lt;title&gt;&lt;/title&gt; &lt;script src="/Scripts/jquery-1.4.1.js" type="text/javascript"&gt;&lt;/script&gt; &lt;script language="javascript" type="text/javascript"&gt; $(function () { $("#Button1").click(function () { checkCard('333'); var arrlist = $("span[class='error']"); if (arrlist.length &gt; 0) { alert('2222') } else { alert('3333'); } }); }) function checkCard(card_no) { $.ajax({ type: "GET", url: "CheckCard.ashx?card_no=" + card_no, success: function (data) { if (data == "true") { $("#sw").addClass("error"); } else { $("#sw").removeClass("error"); } } }); } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;div&gt; &lt;span id="sw"&gt;&lt;/span&gt; &lt;/div&gt; &lt;/form&gt; &lt;input id="Button1" type="button" value="button" /&gt; &lt;/body&gt; CheckCard.ashx: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data.SqlClient; namespace SwipeCard { /// &lt;summary&gt; /// Summary description for CheckCard /// &lt;/summary&gt; public class CheckCard : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/html"; context.Response.Write("true"); context.Response.End(); } public bool IsReusable { get { return false; } } } } </code></pre> <p>I wolud like to get results: 2222 .but i can not get the results now.Output '3333' always. can anyone help me out ?thank you very much!</p>
 

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