jsonp workflow

Ajax - Jsonp - script.js

    $(function(){
      var xhr, $form = $('form');

      function getResponse(data){
        console.log(data);
      }

      function postForm(){
        return $.ajax({
          'dataType' : "jsonp",
          'data'     : $form.serialize(),
          'jsonp'    : "emayll",
          'url'      : $form.attr('action')
        })
      }
      
      $form.on('submit', function(e){
        e.preventDefault();
        xhr = postForm().done(getResponse);
        return false;
      });

    });

send.php

<?php

// Handles JSONP requests
$app->get('/send', function() use($app) {

  // Requires callback variable with name emayll
  if ($cb = $app->request->get('emayll'))
    echo  $cb . '(' . json_encode($app->request->get()) . ');';
});