Username can only contain letters,numbers and underscoress什么意思

Username can only contain letters,numbers and underscoress什么意思 username 1.Your username can only contain letters A-Z or numbers 0-9 2.Password Confirm Password 3.Postcode Password和 Confirm Password 这是两个…… can't be the same as your username翻译 username contains invalid characters.it may only use a-z,0-9 Username must contain only letters and numbers.No special characters allowed是什么意思 The username may only consist of characters and numbers and must start with a character.//英语翻译 The username may only contain letters and numbers (A-z,0-9) and dashes帮我取个username吧 要求如上所示 form1.username. we only can 还是we can only Can't remember your user name or password?Username or eMail addressPasswordSend login info The username may only consist of characters and numbers and must start with a character.(翻译） only time can There Can Only Be Only love can be.! Only Love Can 歌词 only you can see Only God Can Judge