“： ”用户名或密码无效 请重试。

Username or password is invalid. Try again.

youdao

你可能还有两个客户端校验来确保用户名和密码不要少于一位字符或太长，或者不包含任何无效字符。

You might also have two client-side validators that ensure that the username and password are at least a character or so long, or perhaps don't contain any invalid characters.

youdao

用户名字或密码无效，请重新登入。

Invalid username or password. Please try again.

youdao