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export function validateCpf(cpf: string) { | |
cpf = cpf.replace(/[^\d]+/g,'') | |
if ( | |
cpf.length !== 11 || | |
cpf === '' || | |
cpf === "00000000000" || | |
cpf === "11111111111" || | |
cpf === "22222222222" || | |
cpf === "33333333333" || | |
cpf === "44444444444" || | |
cpf === "55555555555" || | |
cpf === "66666666666" || | |
cpf === "77777777777" || | |
cpf === "88888888888" || | |
cpf === "99999999999" | |
) { | |
return false; | |
} | |
let add = 0; | |
for (let i=0; i < 9; i++) { | |
add += parseInt(cpf.charAt(i)) * (10 - i); | |
} | |
let rev = 11 - (add % 11); | |
if (rev == 10 || rev == 11) rev = 0; | |
if (rev != parseInt(cpf.charAt(9))) return false; | |
add = 0; | |
for (let 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; | |
} |
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Regex for formatting the input to the CPF pattern XXX.XXX.XXX-XX
const formatCpf = /^\d{3}\.\d{3}\.\d{3}-\d{2}$/