title: Dropzone.js - How to change file name before uploading to folder
body: <p>I am using <a href="http://www.dropzonejs.com/" rel="noreferrer">DropzoneJS</a> script for uploading images with drag &amp; drop, but now I'm looking for a solution for how to add current timestamps with file name before uploading to the server folder, because I am not able to upload the same image if the file already exists in the folder.</p>
  
  <p>I have also referred below stackoverflow link but I'm confused where to implement this.</p>
  
  <ol>
  <li><a href="https://stackoverflow.com/a/23805488/3113858">https://stackoverflow.com/a/23805488/3113858</a></li>
  <li><a href="https://stackoverflow.com/a/19432731/3113858">https://stackoverflow.com/a/19432731/3113858</a></li>
  </ol>
  
  <p>Here is <a href="https://raw.githubusercontent.com/enyo/dropzone/master/downloads/dropzone.js" rel="noreferrer">dropzone.js script</a> for reference  </p>