title: Keep getting "Uncaught TypeError: Cannot use 'in' operator to search for '191'" jQuery
body: <p>I am trying to learn jQuery AJAX, and keep getting the same error when trying to read a JSON file. Here is the javascript code:</p>
  
  <pre><code>$(function (){
  
      var $orders = $('#orders');
  
      $.ajax({
          type: 'GET',
          url: '/api/orders',
          success: function(orders) {
              $.each(orders, function(i, order) {
                  $orders.append('&lt;li&gt;my order&lt;/li&gt;');
              });
          }
  
  
      });
  });
  </code></pre>
  
  <p>Here is the JSON code:</p>
  
  <pre><code>"order":[
      {"id":1, "name":"Ben", "drink":"Americano w/ Creme"},
      {"id":2, "name":"Ben2", "drink":"Americano w/ Creme2"},
      {"id":3, "name":"Ben3", "drink":"Americano w/ Creme3"}
  ]
  </code></pre>
  
  <p>I keep getting this error:</p>
  
  <pre><code>Uncaught TypeError: Cannot use 'in' operator to search for '191' in "order":[
      {"id":1, "name":"Ben", "drink":"Americano w/ Creme"},
      {"id":2, "name":"Ben2", "drink":"Americano w/ Creme2"},
      {"id":3, "name":"Ben3", "drink":"Americano w/ Creme3"}
  ]
  jquery.js:584 
  isArraylikejquery.js:359
  jQuery.extend.eachmain.js:10
  $.ajax.successjquery.js:3143
  jQuery.Callbacks.firejquery.js:3255
  jQuery.Callbacks.self.fireWithjquery.js:9309
  donejquery.js:9713
  jQuery.ajaxTransport.send.callback
  </code></pre>
  
  <p>Does anyone have any idea why I keep getting this error? Thanks in advance for anyone's help.</p>