jquery - How to check whether the content of the field contains part of the second field?

I have a code that checks if both fields have the same value:

$ampD.blur(function() {
      setInterval(update, 1000);


      function update() {
        if ($('input#autocompletegoogle').attr('value') == $('input#field-address').attr('value')) {
          $ampD.attr('style', '');
        } else {
          $ampD.attr('style', 'border: 1px solid #f00!important;background: #ffefef !important');
        }

But sometimes $('input#autocompletegoogle') contains additionals marks example:

"5611JM Eindhoven, Netherlands"

but input#field-address contains "Eindhoven, Netherlands" and I get false.

How can I check in whether $('input#autocompletegoogle') contains value from $('input#field-address')?

I tried to find the solution almost one hour... I could find right information. Somone could help me?