I'm a complete and utter AJAX noob and have been sitting with the same problem for the last 5 hours.
My script code
<script language='javascript'>
function upvote(id ,username)
{
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
}
};
xmlhttp.open("GET", "vote.php?id=" +id+"&username=" +username, true);
xmlhttp.send();
}
</script>
My onclick link,
<a href='javascript:void(0)' onclick='upvote($id,$username)'></a>
$_GET
is used to retrieve parameters sent via the URL of the page. For example
../vote.php?id=3&username=anor
My php file works perfect when i tried that.
I don't think there's anything wrong with the PHP anyway. For some reason however, xmlhttp.send(params) is still not sending the required variables to the vote.php file. I tried post AJAX request but it didn't work either.
</div>