jquery ajax wrapped as Q promise

by enorl76

HTML

<script src="https://cdn.rawgit.com/kriskowal/q/v1.5.1/q.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!--<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>-->
<div id="container">
  <div id="banner-message">Hello World</div>
  <button>Echo Request</button>
  <div class="out">
    <div id="log">Log</div>
    <div class="pre">
      <pre id="json"></pre>
    </div>
  </div>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#container {

  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
}

#banner-message {
  padding: 10px 0px;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

.out { font-size: 10px; }
.out > * { padding-top: 10px; }
.pre { text-align: left; }


#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

// find elements
var $banner = $("#banner-message");
var $button = $("button");
var $log = $("#log");
var $json = $("#json");

Q_jqueryajax_promise = function(data) {
  return Q(jqueryajax_promise(data));
}
jqueryajax_promise = function(data) {
  return $.ajax({
      url: "https://next.json-generator.com/api/json/get/V1GpCWmBS?delay=2",
      type: 'POST',
      dataType: 'json'
    });
}

// handle click and add class
$button.on("click", function(){
  
	$log.text('Starting request');
  
  Q_jqueryajax_promise().then(function(resp) {
  	$json.html(JSON.stringify(resp,null,2));
    $log.text('');
  })
	.catch(function(reason) {
  	$log.html(JSON.stringify(reason,null,2));
		$log.css({color:'red'});
  });
  
})