MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

if (document) window.µ = function (id, elem) {
  var ret;
  var root = ((elem) ? elem : document);
  var spl = id.split('>');
  switch (spl[0].charAt(0)) {
    case '|':
      ret = root;
      break;
    case '+':
      ret = document.createElement(spl[0].substring(1));
      if (elem) elem.appendChild(ret);
      break;
    case '#':
      ret = root.querySelector(spl[0]);
      break;
    default:
      ret = Array.from(root.querySelectorAll(spl[0]));

      ret.style = function (mem, val) {
        for (let i = 0; i < ret.length; i++) {
          ret[i].style[mem] = val;
        }
      };

      //}
      break;
  }
  if (spl.length <= 1) return ret;
  else return ret.getAttribute(spl[1]);
};