Code to navigate to previous page in history if it exists, otherwise go back to a default "back" location.

back-with-fallback.js

// Use: ><a href="list.html" class="js-back">Go back</a>

  $('.js-back').on('click', function(evt) {
    if (document.referrer != "") {
        evt.preventDefault();
        history.back();
    }
  });