title: Why does LinkedIn have JavaScript and Rest API?
body: <p>Why does LinkedIn has <a href="https://developer.linkedin.com/apis" rel="nofollow">REST and JavaScript API samples</a>? One is a JavaScript api and the other is rest api. What purpose does having 2 api's serve? Is one better than the other? Have you used any and faced problems? </p>
  
  <p>Which is more efficient in terms of information retrieval time</p>