Problem with JS/PHP

Question

Good afternoon, everyone,

I am trying to chat to my intranet and the problem is this, my JS code is not capturing the return via PHP echo, so the function does not erase the text that the person writes in the chat after enter, could help me?

Follows the codes:

Submit.php

<?php
if(isset($_POST['mensagem'])){
    include("../conectaBanco.php");

    $mensagem = strip_tags(trim(filter_input(INPUT_POST, 'mensagem', FILTER_SANITIZE_STRING)));
    $de = (int)$_POST['de'];
    $para = (int)$_POST['para'];
    $tempo = time();

    if($mensagem != ''){
        $insert = "INSERT INTO mensagens (id_de, id_para, mensagem, time, lido) VALUES ('$de','$para','$mensagem','$tempo','0')";
        if($res = mysqli_query($conn, $insert)){
            echo 'ok';
        }else{
            echo 'no';
        }
    }
}
?>

Function.js

    jQuery('body').on('keyup', '.msg', function(e){
    if(e.which == 13){
        var texto = jQuery(this).val();
        var id = jQuery(this).attr('id');
        var split = id.split(':');
        var para = Number(split[1]);

        jQuery.ajax({
            type: 'POST',
            url: './sys/submit.php',
            data: {mensagem:texto, de: userOnline, para: para},
            sucess: function(retorno){
                if(retorno == 'ok'){
                    jQuery('.msg').val('');
                }else{
                    alert('Ocorreu um erro ao enviar a mensagem :(');
                }
            },
            error: function(){
                alert('Ocorreu um erro ao enviar a mensagem :(');
            }
        });
    }
});

Through Firebug I realized that Submit.php is working:

Thank you!

Answer 1

Your error is written, the callback must be Success and not succeed!

Answer 2

In your ajax request, you have the callback sucess that does not exist, right would be success