Function contains

tools/pythonauto/static/codemirrorepl/codemirror.js:7053–7058

(parent, child)

  }

  function contains(parent, child) {
    if (parent.contains)
      return parent.contains(child);
    while (child = child.parentNode)
      if (child == parent) return true;
  }

  function activeElt() { return document.activeElement; }
  // Older versions of IE throws unspecified error when touching