Returns a generator of the doms of the given tag name.
@param {string} tagName The tag name of the dom to create
@return {Function}
function domGen(tagName) {

  /**
   * Generates a dom with the given params.
   * @param {object} [opts] The options to pass as the second arg of $('<tag/>', arg)
   * @param {object[]} args The objects to append to the element
   * @return {jQuery}
   */
  return (opts, ...args) => {
    if (!seemLikePlainObject(opts)) {
      args.unshift(opts)
      opts = undefined
    }

    return $('<' + tagName + '/>', opts).append(...[].concat(...args))
  }
}