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Expressões regulares

Expressões regulares podem salvar sua vida!

E-mail

  • Regex valida se é e-mail
  • Valida se tem domínio
  • Valida se tem subdomínio
[\w\.]+@[a-zA-Z_\-]+?\.[a-zA-Z]{2,}([\.a-zA-Z]?){3,4}

Exemplos válidos:

Data de nascimento

  • Esse regex valida o dia, indo de 01 até 31
  • Valida o mês, de 01 até 12
  • Valida o ano, de 1900 até o ano atual 2017
(0[1-9]|1[0-9]|2[0-9]|3[0-1])[/](0[1-9]|1[0-2])[/](19[0-9]{2}|20[0-7]{2})

CNPJ

([0-9]{2}[\.][0-9]{3}[\.][0-9]{3}[\/][0-9]{4}[-][0-9]{2})

CPF

([0-9]{3}[\.][0-9]{3}[\.][0-9]{3}[-][0-9]{2})

Testes

Teste as expressões no site http://www.regexpal.com/

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