Passing a value from JQuery .post to PHP - php

Question

I just started picking up JQuery today, and for some reason I can't get this simple $.post to work when a form is submitted.
I want to pass the value of 2 as star to my PHP page "update_item.php".
I added an alert and saw that when I clicked submit it would give me the alert, but for some reason the value of 2 just doesn't pass to the php page.
Here's what I have with JQuery:
$('#form_edit_item').submit(
function(){
alert("submitting");
$.post(
"edititem.php",
{star: "2"},
);
});
Here's what I have in update_item.php:
$star = $_POST['star'];
echo "Star value: " .$star. "";
What am I doing wrong?
Your help would be very much appreciated! Thanks!

Answer 1

$.post(url, data, callback, "json");
http://docs.jquery.com/Ajax/jQuery.post

Answer 2

$('#form_edit_item').submit(
function() {
alert("submitting");
$.post("update_item.php", {
star : "2"
});
});
Remove the trailing comma after {star : "2"}. Try this.

Answer 3

You could use ajax
$.ajax({
type: "POST",
url: "update_item.php",
data: {
star: "2" // or 'star: $('#id').val()', or any other value
}
}).done(function( msg ) {
// do it when its done or do nothing
});
and in update_item.php you should use somthing like that
<?php $star=(isset($_POST['star']) ? $_POST['star'] : '');
echo $star; ?>
If this won't work, try change POST to GET so you can check passing value by url (domain.com/update_item.php?star=2)

Answer 4

You can Use this code,
<form action="../handler/AjaxHelper.php" method="POST">
</form>
$(document).ready(function() {
$('form').submit(function() {
$.ajax({
type: this.method,
url: this.action,
data: $(this).serialize(),
success: function(data)
{
var result = $.parseJSON(data);
if (result["messageCode"] == 'success')
{
alert(result["message"]);
}
else
{
alert(result["message"])
}
},
error: function()
{
alert("Please Try Again");
}
});
return false;
});
});
In AjaxHelper.php
$objLoginHelper = new LoginHelper();
$objLoginHelper = unserialize($_SESSION["LoginInformation"]);
$postDate = date("Y-m-d H:i:s", strtotime($_POST['txtTopicDate']));
$dataTopics = array($_POST['txtTopicSubject'], $postDate, $_POST['ddlCategories'], $objLoginHelper->getUserLoginId());
$result = array();
try {
$rp = new Repository();
$rp->SaveForumTopics($dataTopics);
$result["messageCode"] = "success";
$result["message"] = "Category Save Successfully";
} catch (Exception $ex) {
$result["messageCode"] = "error";
$result["message"] = $ex->getMessage();
}
echo json_encode($result);