title: How to set select tag to readonly before ajax success?
body: <p>How to set select tag to readonly before ajax success ?</p>
  
  <p>i use this but not work</p>
  
  <pre><code>$("#tower").prop('readonly', true);
  </code></pre>
  
  <p>then i use this , but i not get value from select tag </p>
  
  <pre><code>$("#tower").attr("disabled", true);
  </code></pre>
  
  <p>How can i set readonly select tag ?</p>