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Erro em função jquery


chicote
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Boa noite,

Estou praqui a tentar enviar um valor para um ficheiro php, e receber resposta desse mesmo ficheiro, isso automaticamente. Mas algo esta a correr mal. Eu sou iniciante nesta area e tou com alguma dificuldade. Alguem por favor me consegue ajudar?

Deixo em baixo o codigo jquery, esta alguma coisa nele mal que esta a bloquear o funcionamento total do site.

<script>

           $(document).ready(function() {

           var myLast = 'sendlast='+ $("#send_total").val();

           var auto_refresh = setInterval(

           jQuery.ajax({
           type: "POST",
           url: "auto_load_news.php",
           dataType:"text",
           data:myLast,

           success:function ()
           {
           $('#have_news').load('auto_load_news.php').show("slow");
           },
           error:function (xhr, ajaxOptions, thrownError){
           alert(thrownError);
           }
           }),
           2000);

           });
</script>

<?php
include("config.php");

if(isset($_POST["sendlast"]))
{

$last = filter_var($_POST["sendlast"], FILTER_SANITIZE_NUMBER_INT, FILTER_FLAG_STRIP_HIGH);


$result = $mysqli->prepare("SELECT idpost FROM post ORDER BY idpost DESC LIMIT 1");
$result->execute(); //Execute prepared Query
$result->bind_result($idposta); //bind variables to prepared statement



while($result->fetch()){
if($idposta > $last){

   echo "Existem novos posts";
}
else{

}
}
}
?>
Edited by chicote
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HappyHippyHippo
success: function(reply)
{
 //$('#have_news').load('auto_load_news.php').show("slow");
 $('#have_news').html(reply).show("slow");

// talvez ...
while($row = $result->fetch()){
if($row['idposta'] > $last){
Edited by HappyHippyHippo
IRC : sim, é algo que ainda existe >> #p@p
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