JS 生成uuid

const uuid = () => {
  const tempUrl = URL.createObjectURL(new Blob());
  const tempId = tempUrl.toString(); // blob:https://xxx.com/b250d159-e1b6-4a87-9002-885d90033be3
  URL.revokeObjectURL(tempUrl);
  return tempId.substr(tempId.lastIndexOf("/") + 1);
}