Created
April 10, 2021 07:30
-
-
Save Krymancer/085e91193ccb31feab6d7c58c4715849 to your computer and use it in GitHub Desktop.
Validar CPF
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function verifyCPF(cpf) { | |
cpf = cpf.replace(/[^\d]+/g,''); | |
let i,add,rev; | |
if(cpf === '') return false; | |
// Elimina CPFs invalidos conhecidos | |
if (cpf.length !== 11 || | |
cpf === "00000000000" || | |
cpf === "11111111111" || | |
cpf === "22222222222" || | |
cpf === "33333333333" || | |
cpf === "44444444444" || | |
cpf === "55555555555" || | |
cpf === "66666666666" || | |
cpf === "77777777777" || | |
cpf === "88888888888" || | |
cpf === "99999999999") | |
return false; | |
// Valida 1o digito | |
add = 0; | |
for (i=0; i < 9; i ++) | |
add += parseInt(cpf.charAt(i)) * (10 - i); | |
rev = 11 - (add % 11); | |
if (rev === 10 || rev === 11) | |
rev = 0; | |
if (rev !== parseInt(cpf.charAt(9))) | |
return false; | |
// Valida 2o digito | |
add = 0; | |
for (i = 0; i < 10; i ++) | |
add += parseInt(cpf.charAt(i)) * (11 - i); | |
rev = 11 - (add % 11); | |
if (rev === 10 || rev === 11) | |
rev = 0; | |
if (rev !== parseInt(cpf.charAt(10))) | |
return false; | |
return true; | |
} | |
module.exports = verifyCPF; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment