title: convert '1' to '0001' in JavaScript
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2686855/is-there-a-javascript-function-that-can-pad-a-string-to-get-to-a-determined-lengt">Is there a JavaScript function that can pad a string to get to a determined length?</a>  </p>
  </blockquote>
  
  
  
  <p>How can I convert convert '1' to '0001' in JavaScript without using any 3rd party libraries. I have done this in php using spritf: <code>$time = sprintf('%04.0f',$time_arr[$i]);</code></p>