title: Call Javascript from code behind function in asp.net
body: <p>How to Call Javascript function from code behind after button click event;</p>
  
  <pre><code> string popupScript = "&lt;script language='javascript'&gt;" +
                           "alert('hai');" +
                         "&lt;/script&gt;";
  
                  ClientScript.RegisterStartupScript(Page.GetType(), "script", popupScript, true);
  </code></pre>
  
  <p>I tried above script but not working</p>