$ .post（“ file.php”，{}，null，“ json”）。done（function（data）{}不起作用（不从php加载dada）

Question

I amb trying to let work a $.post jquery function using JSON data, but the case is that when I expect to return the data, looks like the method is never called, or never triggered. I don't understand why in this case is not working, when I just made a copy/paste from the same code in the same .php file. Here I let you the code:

 $.post("operacions/obtenirIdUs.php", {idUsConcret : idUsConcret}, null, "json").done(function(data){
      alert("hello there");
     $("#NomUsuariLinea").val(data.Nom);
     $("#LlinatgesUsuariLinea").val(data.Llinatges);
     $("#ContrassenyaUsuariLinea").val(data.contrassenya);
     $("#EmailUsuariLinea").val(data.email);


    })

The alert is never shown. I would really apreciate any solution, due the case that this code is working with other examples in the same page as I said before.

Here I let you my php.file: "obtenirIdUs.php"

<?php
include("../connexio.php");
$idUsConcret= $_POST['idUsConcret'];

$arrayDatos = array();


$EditarFactura = "SELECT * FROM usuari WHERE idUsuari = '".$idUsConcret."'";
echo $EditarFactura;
$connexio = mysqli_query($conn,$EditarFactura) or die(mysqli_error());

while($llistaFactura = mysqli_fetch_array($connexio)){
$arrayDatos['Nom'] = $llistaFactura['Nom'];
$arrayDatos['Llinatges'] = $llistaFactura['Llinatges'];
$arrayDatos['contrassenya'] = $llistaFactura['contrassenya'];
$arrayDatos['email'] = $llistaFactura['email'];
$arrayDatos['rol'] = $llistaFactura['rol'];


}
echo json_encode($arrayDatos);
?>

Once again, thank you.

Answer 1

尝试将“完成”替换为“成功”：

$.post("operacions/obtenirIdUs.php", {idUsConcret : idUsConcret}, null, "json").success(function(data){...});

Answer 2

try this:

$.post("operacions/obtenirIdUs.php", {idUsConcret : idUsConcret}, null, "json").then(
 function(data){
   //handle your data
},function(err){
   //handle error
});

Answer 3

I've already solved the mistake, I had a echo "hello"; on the php file, and cause of that the json encode was not working.

Thank you all of you who tried to help me.

Have a good day!