title: Angular js way to add commas for amount based on no. of digits, once user tabs out and to auto add .00 for non decimal amount in input box
body: <p>I am new to angular.
  The requirement is-</p>
  
  <p>I have an input field for amount in different currency.My requirement is that ,Once user tabs out,I want the comma to get added automatically, based on number of digits in the amount.Also,if amount entered does not include a decimal value,then .00 should get auto added to the amount.</p>