How to pass hidden fields to another form on the site?

Question

JavaScript

here is the site paratovarov.ru/09 , first we write some text in the "inscription on the case" field, select the color of the case from above, then these parameters are transferred as hidden fields to the form that is called by the pop-up window.
Here is the question, how to transfer these fields to the form? How is it connected?

Answer 1

Here's an example for you. You have two inputs.

<input class="from" value="Отсюда копируем текст">
<input class="to" value="Сюда копируем текст">

One visible, where the user enters the word, the other invisible, which is in the pop-up window. You need to copy the phrase there. Do this:

$('.from').keyup(function() {
  $('.to').val( $(this).val() );
});

And each time you press the key, the info from this field will be copied to the invisible one.
If you want, you can replace keyupwith focusoutor something else ...
Yes, and the color selection does not work for you (Google Chrome OS X).

Answer 2

when opening a popup, do the following:
$('#orderText').val( $('#sign').val() )