function validarCPF(cpf) { cpf = cpf.replace(/\D/g, ''); if (cpf.length !== 11) return false; if (/^(\d)\1+$/.test(cpf)) return false; let soma = 0; let resto; for (let i = 1; i <= 9; i++) { soma += parseInt(cpf.substring(i - 1, i)) * (11 - i); } resto = (soma * 10) % 11; if ((resto === 10) || (resto === 11)) resto = 0; if (resto !== parseInt(cpf.substring(9, 10))) return false; soma = 0; for (let i = 1; i <= 10; i++) { soma += parseInt(cpf.substring(i - 1, i)) * (12 - i); } resto = (soma * 10) % 11; if ((resto === 10) || (resto === 11)) resto = 0; if (resto !== parseInt(cpf.substring(10, 11))) return false; return true; }