code: function isHTMLNode(html) {
      if (typeof HTMLElement === 'object') {
          return (html && (html instanceof HTMLElement || !!html.nodeType));
      }
  
      return !!(html && html.nodeType);
  }
docs: Check whether the given variable is a instance of HTMLNode or not.<br>
  If the given variables is a instance of HTMLNode, return true.
  @param {*} html - Target for checking
  @returns {boolean} Is HTMLNode ?
  @memberof tui.util