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POCheck username JQuery Ajax
 

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    <p>I have the following ajax call </p> <pre><code> $.ajax( { type: "POST", url: "Utilities/CheckUsername.php", data: "un="+ un, success: function(data) { if(data!=1) { $('#mike').html(data); return false; } } }); </code></pre> <p>I want the page to stay if the username is taken, else redirect to whats in the action attribute of the for.</p> <p>Obviously this isn't working. But why? I would like to not use <code>preventdefault</code>, so that I could get a better understanding of where the problem and solution is.</p> <p>EDIT: The server code</p> <pre><code>&lt;?php $seed = 'n48sma94r98'; $email = $_POST['un']; $mysqli = new mysqli('localhost','uml','uml','uml'); if (!$mysqli) { printf("Can't connect to MySQL Server. Errorcode: %s\n", mysqli_connect_error()); exit; } $query = "Select User_Email as Email from user2 where User_Email = AES_ENCRYPT('$email','$seed') "; $result = $mysqli-&gt;query($query); if($result-&gt;num_rows &gt; 0) { echo "1"; } else { echo "2"; } ?&gt; </code></pre> <p>The entire form minus the meta:</p> <pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Untitled&lt;/title&gt; &lt;link rel="stylesheet" type="text/css" href="my.css"&gt; &lt;script type="text/javascript" src="Resources/js/jquery-1.4.2.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt;$(document).ready(function(){ $("#login").submit(function() { var un = $('#username').val(); $.ajax( { type: "POST", url: "Utilities/CheckUsername.php", data: "un="+ un, success: function(data) { if(data!=1) { $('#mike').html(data); return false; } } }); }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form name="login" id="login" method="post" action="dsds.html"&gt; UserName&lt;input type="text" name="username" id="username"value=""&gt; Password&lt;input type="text" name="password" id="password" value=""&gt; Password Again&lt;input type="text" name="passwordagain" id="passwordagain" value=""&gt; &lt;input type="hidden" name="NewClass" id="NewClass" value="true"&gt; &lt;input type="submit" name="submit" id="submit" value="submit"&gt; &lt;/form&gt; &lt;span id = "mike"&gt;&lt;/span&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. USmike628
    1. USmike628
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    1. COYou should probably add more of your code so we can understand what you are trying to do. Is this being executed on form.submit()?
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      1. USChris Carson
    2. COAlso show some server side code, to show what responses are returned when a username (`un`?) was taken already.
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      1. USVeger
    3. COIt would be a lot easier if you would write meaningful variable names. Also the echo 1 and echo 2 don't need quotes, however this is a terrible idea, you could return more meaningful messages, like usernameExists,usernameFound or usernameNotExists,usernameNotFound. Even if you are the only one working on this project, when you go around and ask for help peeps need to understand your code. It should read like sentences.
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      1. USrobert
 

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