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copied!<p>With a HTTP POST, data is normally sent from form inputs with the <strong><a href="http://www.w3.org/TR/html4/interact/forms.html#adef-enctype" rel="nofollow">enctype</a></strong> set to <code>application/x-www-form-urlencoded</code> format. So with an AJAX POST, we would usually send data in this format also and not as a query string parameter, which is how data is usually sent with a HTTP GET request and how you are sending data above.</p> <p>if you change your code to</p> <pre><code> function do_likes(post_id) { $.ajax({ type: "POST", url:"http://www.p-art.co.il/facebook_test/action.php", data : { post_id : post_id } }); } </code></pre> <p>it should work as expected (I'm not familiar with PHP but I assume that the URL you're posting to expects data in <code>application/x-www-form-urlencoded</code> format). with <a href="http://api.jquery.com/jQuery.ajax/" rel="nofollow"><code>jQuery.ajax()</code></a>, if you set the data object to the key/value pairs that you want to send to the server, jQuery will take care of providing the correct <code>enctype</code> for you based on the HTTP request type you are using (you can override the <code>enctype</code> if necessary, but usually this is not required and the defaults will be what you need in the majority of cases).</p> <p>Also, you may want to set a callback function to be called after the AJAX post has successfully completed. To do this add a <code>success</code> property to the object passed to the <code>$.ajax()</code> call.</p>

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