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PO$.ajax() call returns data but $.post() returns "undefined"
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  1. PO$.ajax() call returns data but $.post() returns "undefined"
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    copied!<p>Could someone help me figure out why when I call a web service with $.ajax() call it returns expected data, and when I call the same service with $.post() call, returned data is "undefined"? </p> <p>Please note that while inspecting Response with google's tool (for the .post() call) I can see the data sent back from server but somehow it is unavailable to the .done() function of the .post() call. </p> <p>Program completes without errors.</p> <p>Here is the whole code:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;title&gt;Test01&lt;/title&gt; &lt;script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"&gt;&lt;/script&gt; &lt;script&gt; $(document).ready(function () { $("#btn01").click(function () { //.ajax type call $.ajax({ type: "POST", url: "WebService1.asmx/GetData", data: "{KenID:'11'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (data) { $("#div01").html(data.d); } }); }); $("#btn02").click(function () { // .post() type call $.post("WebService1.asmx/GetData", { KenID: "11" }) .done(function (data, status) { $("#div01").html("Data: " + data.d + "&lt;/br&gt;Status: " + status); }) .fail(function () { alert("error"); }) .always(function () { alert("completed"); }); }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="div01"&gt;Here comes the result&lt;/div&gt; &lt;button id="btn01"&gt;Load Data with $.ajax : &lt;/button&gt; &lt;button id="btn02"&gt;Load Data with $.post : &lt;/button&gt; &lt;input id="KenID" value="11" /&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Thank you,</p> <p>Jacek</p>
 

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