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Expressões Regulares

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Avatar for Vitor Mendrone Vitor Mendrone
January 23, 2020
Technology
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Expressões Regulares

O mínimo que você precisa saber sobre expressões regulares para parecer um gênio.

Avatar for Vitor Mendrone

Vitor Mendrone

January 23, 2020

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Transcript

  1. None

  2. Vitor Mendrone Founder - Lukin Senior Developer - Work &

    Co

  3. /^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i

  4. None

  5. Expressões Regulares

  6. String Padrões Combinar Localizar Gerenciar

  7. None

  8. Literal Constante Construtor de Objeto Padrão desconhecido

  9. /pattern/flag New RegExp(pattern, flag)

  10. Pattern /meetup-html/g

  11. Flags /meetup-html/g

  12. G Global I Ignore Case M Multiline

  13. .test() .exec()

  14. .test()

  15. .exec()

  16. Meta-characters \d Dígitos (Igual a [0-9]) \w Alfanuméricos e Underline

    (Igual a [a-zA-Z0–9_]) \s Espaços e tabs . Qualquer caractere exceto line-breaks

  17. Quantificadores ^ Inicio da string $ Fim da string +

    Uma ou mais vezes

  18. Mais Quantificadores {N} N ocorrências da expressão {N,} N ou

    mais ocorrências da expressão {N,M} De N a M ocorrências da expressão

  19. Escape / Alternância \ Escapa o próximo caractere (Ex.: \.)

    | Ou

  20. Grouping [] Grupo de caracteres () Grupo de captura

  21. None

  22. Validar um CPF!

  23. Validar um CPF! const cpfRegex = //

  24. Definindo uma flag! (Ou Não) const cpfRegex = //

  25. Adicionando limites const cpfRegex = /^$/

  26. NNN.NNN.NNN-NN \d.\d.\d-\d

  27. const cpfRegex = /^\d$/ Meta-characters!

  28. Quantificadores! const cpfRegex = /^\d\d … const cpfRegex = /^\d{3}&/

  29. Escapando! const cpfRegex = /^\d{3}\.$/

  30. const cpfRegex = /^\d{3}\.\d{3}\.\d{3}\-\d{2}$/

  31. https:/ /regexr.com

  32. Obrigado! [email protected] Twitter: @vhmendrone