app/Resources/static/themes/_global/js/restoreScroll.js

   1 function supportsLocalStorage() {
   2     try {
   3         return 'localStorage' in window && window['localStorage'] !== null;
   4     } catch (e) {
   5         return false;
   6     }
   7 }
   8
   9 function savePercent(id, percent) {
  10     if (!supportsLocalStorage()) { return false; }
  11     localStorage["wallabag.article." + id + ".percent"] = percent;
  12     return true;
  13 }
  14
  15 function retrievePercent(id) {
  16     if (!supportsLocalStorage()) { return false; }
  17
  18     var bheight = $(document).height();
  19     var percent = localStorage["wallabag.article." + id + ".percent"];
  20     var scroll = bheight * percent;
  21
  22     $('html,body').animate({scrollTop: scroll}, 'fast');
  23
  24     return true;
  25 }