title: parse JSON Map in JQuery
body: <p>I have the following map where every key is a map which its values are lists as the following json: </p>
  
  <pre><code>{
    "key": {
      "source": ["element1", "element2"],
      "target": ["element1", "element2"]
    },
    "key2": {
      "source": ["element1"],
      "target": ["element1"]
    }
  }​
  </code></pre>
  
  <p>I want to do the following:</p>
  
  <ol>
  <li><p>Get key ( get("key2")) which will return the map </p></li>
  <li><p>Go over every key in this map( source and target)</p></li>
  <li><p>iterate over each item in the result list (element1, element2)</p></li>
  </ol>
  
  <p>How can I achieve this?</p>