Jquery submits form but does not fade my div

The title almost says it all. I have a jquery code i've written, im not good at it but this is what i achieved:

$("#myForm").submit(function(){

            //alert($(this).serialize());

            $.post("submit.php", $(this).serialize(), function(data){
                if(data == success) {

                $("#add_vote").fadeOut("fast");
                $("#verification_sen开发者_如何学Got").fadeIn("fast");
                $("#wrong").fadeOut("fast");

                } else {

                $("#wrong").fadeIn("fast");

                }
            });

            return false;
        });

The form gets submitted well but the fadeIn and fadeOut's I have does not work. Do anyone know why?

Verify what submit.php returns, and what is in data.

if(data == success) {

This looks suspicious, did you meant if (data == "success") { ? (success is a variable, probably undefined; "success" is a string.)

What is success in:

if(data == success) {

Maybe you mean:

if(data == "success") {

Or else you maybe have misunderstood the $.post function?

 $.post("submit.php", $(this).serialize(), function(data){

Lets break it up:

 "submit.php" // the url (OK)
 $(this).serialize() // The data (OK)
 function(data){ // The callback on success

And its only a helper function for the $.ajax method, Witch also have a error callback:

var ajaxObj = $.ajax({
  type: 'POST',
  url: "submit.php",
  data: $(this).serialize()
});
ajaxObj.success(function(){
    // Success
});
ajaxObj.error(function(){
    // Error
});