title: How to disable a drop down list item in dropdown list on load using jquery
body: <p>I have dropdown list with some list items . Here ,  i need to disable a single item in the dropdown list .</p>
  
  <p>I mean value should be present in dropdown list but should not be selectable.</p>
  
  <p>I have tried in the following way with no luck:</p>
  
  <pre><code> $("#SelectorList select option [value*='n/a']").prop('disabled',true);
  </code></pre>
  
  <p>But, it is not working.i was able to disable entire dropdown list by using </p>
  
  <pre><code> $("#SelectorList").prop('disabled',true);
  </code></pre>
  
  <p>What is the change that i need to do inorder to make this work. please help.</p>