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POStoring values in a database via AJAX not working
 

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  1. POStoring values in a database via AJAX not working
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    <p>I have this function which uses ajax, but this function doesn't work. I tried a lot, but I'm not able to figure out where the problem is. I am trying to create an alert, when the user inserts a duplicate entry into the database using a check-box selection.</p> <pre><code>&lt;script&gt; function func(e,eid,emprid) { if(document.getElementById(e).checked){ var dataString = 'eid=' + eid + '&amp;emprid='+emprid; $.ajax({ type:"POST", url: "mylistcheck.php", data: dataString, success: function(result){ if(result!='0') { modal.open({content: "&lt;span style=\"color:red\" &gt;&lt;h2&gt;You have already selected candidate &lt;/h2&gt;&lt;/span&gt;"}); document.getElementById(e).checked=false; } } }); } } &lt;/script&gt; </code></pre> <p><code>mylistcheck.php</code> looks like this:</p> <pre><code>&lt;?php require_once("includes/session.php"); ?&gt; &lt;?php require_once("includes/connection.php"); ?&gt; &lt;?php require_once("includes/functions.php"); ?&gt; &lt;?php $eid=$_POST['eid']; $emprid=$_POST['emprid']; $sqlchecklist="SELECT * FROM selected_candidate WHERE eid='{$eid}' AND rid='{$emprid}' "; $checklistres=mysql_query($sqlchecklist); $list_check=mysql_num_rows($checklistres); echo "numrows listcheck".$list_check; if($list_check&gt;0) { echo "1"; } else { echo "0"; } ?&gt; </code></pre> <p>The check-box code is like this:</p> <pre><code>echo "&lt;td&gt;&lt;input id=\"select_candi{$i}\" onclick=\"javascript:func(this.id,{$data_set['eid']},{$emprid})\" type=\"checkbox\" name=\"check_candi[]\" value=\"{$data_set['eid']},{$emprid}\"/&gt;&lt;/td&gt;"; </code></pre>
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    1. USDurga
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    1. COPlease, don't use mysql_* functions for new code. They are no longer maintained and are [deprecated as of PHP 5.5.0](http://php.net/manual/en/intro.mysql.php). See the [red box](http://goo.gl/GPmFd)? Instead learn about [prepared statements](http://goo.gl/vn8zQ) and use either [PDO](http://php.net/pdo) or [MySQLi](http://php.net/mysqli). If you can't decide, [this article](http://goo.gl/3gqF9) will help you to choose. If you care to learn, here is good [PDO tutorial](http://goo.gl/vFWnC).
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      1. USpeterm
    2. CODo u receive any error? check in error console
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      1. USEdwin Alex
    3. COno i don't receive any errors,can you please tell how can i check it in error console as i am not so expert in php
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