title: What is the use of jQuery.noop() function?
body: <p>I was going through one <code>Backbone.js</code> plugin in which I found the below piece of code.</p>
  
  <pre><code>callbacks : {
      search : $.noop,
      valueMatches : $.noop
  }
  </code></pre>
  
  <p>What is the <code>$.noop()</code> function doing here?</p>