How to set the same value in different forms?

Question

JavaScript

I have a couple of forms. They need to add a hidden input with the same value. I won't copy and paste it into every form, will I? You can take it somewhere, but with the condition that the forms take away its value.

Answer 1

$(document).ready(function(){
    $('form').append('<input type="hidden" value="bla bla">');
  });