title: how to add white space in html text field after every 4 numbers
body: <p>I am trying to figure out how to add white space within the textfield while editing. I have a 16 digit number and i want a white space after every 4th number </p>
  
  <p>My digit it like 1010101010101010</p>
  
  <p>and i want like 1010 1010 1010 1010 (with in textfield)</p>