Weird jQuery .post behavior - php

Question

I have several clones of this script throughout my site and they work. The function is to enable liking, following, etc. (anything that requires a reference table to store the like, follows, etc.) The problem is with my liking function its running the .post 12 times. My follow script has the same jquery code but doesn't do this. So I resorted to checking my fave.php/unfave.php files, but I can't find any errors. Its the same as my follow.php/unfollow.php files. Can anyone spot or realize this odd behavior?
Basically I'm getting 12 entries into my DB. Why?
fave.js
$(document).ready(function(){
$(function(){
$(".fvspan").on("click", ".favebtn", function(){
var fvs = $(this).attr('id');
if(fvs)
{
$.ajax({
type: "POST",
url: "/mobile/inc/vdfave.php",
data: "fvs=" + fvs,
cache: false,
success: function(data){
$("span#" + fvs + ".fvspan").html("<img id='" + fvs + "' class='favebtn-un' src='/assets/faved.png' height='50px'>");
}
});
}
else { }
});
});
$(function(){
$(".fvspan").on("click", ".favebtn-un", function(){
var fvs = $(this).attr('id');
if(fvs)
{
$.ajax({
type: "POST",
url: "/mobile/inc/vdunfave.php",
data: "fvs=" + fvs,
cache: false,
success: function(data){
$("span#" + fvs + ".fvspan").html("<img id='" + fvs + "' class='favebtn' src='/assets/fave.png' height='50px'>");
}
});
}
else { }
});
});
});
vdfave.php
<?php
session_start();
//Make an SQL connection
include('/home/bfreak/www/inc/dbc.php');
$myself = $_SESSION['username'];
$ref = $_POST['fvs'];
$date = date("Y-m-d h:i:s");
if (!isset($_SESSION['loggedIn'])) { }
else{$myinfo = mysql_query("SELECT * FROM users WHERE username = '$myself'");}
while($myid1 = mysql_fetch_array($myinfo))
{
$myid = $myid1['id'];
//Insert form data into database with corresponding structure, in respective order, of SQL columns.
$fvd = "INSERT INTO faves (vid, usr, date) VALUES ('$ref', '$myid', '$date')";
if (!mysql_query($fvd, $con)) {die('Fatal Error: ' . mysql_error());}
}
mysql_close($con);
?>

Answer 1

Make sure you don't have duplicate usernames in users table in database. while loop may be running 12 times.
Change this:
mysql_query("SELECT * FROM users WHERE username = '$myself'");
to following:
mysql_query("SELECT * FROM users WHERE username = '$myself' LIMIT 1");
and check again.

Answer 2

I figured it out! i ran the js script in the loop. I took it out and it works!