MediaWiki:Common.js

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mw.loader.load("/images/assets/image-selector.js");
/* mw.loader.load("/images/assets/nav.js"); */
mw.loader.load("https://dxgalaxy.org/js/nav.js");

$(function () {
  var $body = $('body');

  // Only run if the page actually contains variant content
  if ($('.variant').length === 0) {
    return;
  }

  // make buttons
  var $bar = $('<div style="margin:1em 0; font-weight:bold;"></div>');
  var $btnOlder = $('<button>Older Revision</button>').on('click', function () {
    $body.removeClass('variant-newer').addClass('variant-older');
    localStorage.setItem('variant', 'older');
  });
  var $btnNewer = $('<button>Newer Revision</button>').on('click', function () {
    $body.removeClass('variant-older').addClass('variant-newer');
    localStorage.setItem('variant', 'newer');
  });

  $bar.append($btnOlder).append($btnNewer);
  $('#firstHeading').after($bar);

  // load saved choice or default
  var saved = localStorage.getItem('variant') || 'newer';
  $body.addClass('variant-' + saved);
});