JSON communication between domains with Cordova [closed]

For you to communicate with a server, you must already have your back end structured, after that, just make the request. An example, using jQuery and PHP Back.

$.ajax({
   type: 'POST',
   url: 'URLDOMEUARQUIVO.php',
   data: {
      email: $('#email').val(),
      senha: $('#senha').val()
   },
   dataType: 'json',
   beforeSend: function(){
      alert('Carrengado...')
   },
   success: function(data){
      localStorage.setItem('id', data.id)
   }
})

With the code above, you are sending a request to your php file requesting the information, in case the user exists, it will return a json with the data.

<?php
   $retorno = array();
   $sql = $pdo->prepare("SELECT * FROM users WHERE email = ? AND senha = ?");
   $sql->execute(array($_POST['email'], $_POST['senha']));

   if($sql->rowCount() > 0){
      $retorno['status'] = 1
      $retorno['dados'] = $sql->fetchAll();   
   }

   $retorno['status'] = 0

   die(json_encode($retorno));

And the code above would be more or less the behavior of back , of course this is just an example and should be adapted as you wish. If you have any difficulty, I encourage you to check out this video