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POAjax and readyState
 

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    <p>I am trying to update my ajax request function to show the individual states of the response. </p> <p>However all I get after I send the request is <code>readyState = 1</code> and then it jumps directly to <code>readyState = 4</code> and I get the full response from the server.</p> <p>Why am I not getting readyStates 2 and 3? </p> <p>When I experimented with native browser, e.g.</p> <pre><code>xmlhttp2 = new XMLHttpRequest() </code></pre> <p>Sending the same requests gets me readyStates 1, 2, 3, and 4 in my callback:</p> <pre><code>xmlhttp2.onreadystatechange </code></pre> <p>But with the JQuery ajax helper function does not. Why is this occuring?</p> <p>Here is my code:</p> <pre><code>var jqXHR = $.ajax( { data: requestForm, //my json request type: req_type, // could be post or get url: script, // php script async: true, success: function(response,textStatus, xhr) { renderIt(response); }, error: function( xhr, textStatus, errorThrown ) { var errText = "&lt;b&gt;Error "+xhr.status+" : "+xhr.reponseText+" , "+textStatus+", "+errorThrown+" &lt;/b&gt;"; $('#'+div).append(errText); } }); jqXHR.fail(function( data, textStatus, jqXHR ) { var errText = "&lt;b&gt;Error "+jqXHR.status+" : "+jqXHR.reponseText+" , "+textStatus+", "+" &lt;/b&gt;"; $('#'+div).html(errText); }); switch(jqXHR.readyState) { case 1: $('#'+div).html("\n&lt;center&gt; Connected to Server...&lt;br/&gt; &lt;img src='images/loading.gif' height=30 width=30&gt;&lt;/center&gt;\n"); break; case 2: $('#'+div).html("\n&lt;center&gt; Request Recieved...&lt;br/&gt; &lt;img src='images/loading.gif' height=30 width=30&gt;&lt;/center&gt;\n"); break; case 3: $('#'+div).html("\n&lt;center&gt; Receiving Responses.....&lt;br/&gt; &lt;img src='images/loading.gif' height=30 width=30&gt;&lt;/center&gt;\n"); $('#'+div).append(xhr.responseText); break; default: $('#'+div).html("\n&lt;center&gt; Awaiting Results.."+jqXHR.readyState+"&lt;br/&gt; &lt;img src='images/loading.gif' height=30 width=30&gt;&lt;/center&gt;\n"); break; } </code></pre>
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    1. USDauh Fhauc
    1. USseedhom
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    1. COYou realize that switch statement only executes once, right?
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      1. USKevin B
    2. COYou are right! How do I bind the switch code to be triggered by a readyState change?
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      1. USseedhom
    3. COuse the readystatechange event? Note however that requires not using jQuery's ajax methods.
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      1. USKevin B
 

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