Update height of div when height changes

Update height of div when height changes

Hi, I currently have a div which i am getting the height off. Current height is 72 pixels when the height is equal to or the same as 72 i display "20" when the div goes over 72 pixels i want to display "25". I have done this so far but want the height to automatically change to 25 when the div goes bigger than 72.

  2. $(function(){
  3. var height = $(".input-container").height()
  4. $("#SignHeight").text(height);
  5. if (height <= 72) {
  6. $("#SignHeight").text('20');
  7. }
  8. else {
  9. $("#SignHeight").text('25');
  10. }
  11. });
Any help with this would be greatly appreciated.