title: Jquery Form validation for select2 multiple
body: <p>I have form in which I have field courses with multi select option. Also there are more than 2courses field in form like below :-</p>
  <ol>
  <li>name=&quot;courses[0][]&quot;</li>
  <li>name=&quot;courses[1][]&quot;</li>
  </ol>
  <p>How can I validate below :-</p>
  <pre><code>rules: {
   &quot;courses[][]&quot;:{
     required:true
   }
  }
  </code></pre>