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validar dni javascript

V1CTOR-cloud answered on October 24, 2022 Popularity 3/10 Helpfulness 3/10

answer validar dni javascript

validar dni javascript

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// Comprueba si es un DNI correcto (entre 5 y 8 letras seguidas de la letra que corresponda).

// Acepta NIEs (Extranjeros con X, Y o Z al principio)
function validateDNI(dni) {
    var numero, let, letra;
    var expresion_regular_dni = /^[XYZ]?\d{5,8}[A-Z]$/;

    dni = dni.toUpperCase();

    if(expresion_regular_dni.test(dni) === true){
        numero = dni.substr(0,dni.length-1);
        numero = numero.replace('X', 0);
        numero = numero.replace('Y', 1);
        numero = numero.replace('Z', 2);
        let = dni.substr(dni.length-1, 1);
        numero = numero % 23;
        letra = 'TRWAGMYFPDXBNJZSQVHLCKET';
        letra = letra.substring(numero, numero+1);
        if (letra != let) {
            //alert('Dni erroneo, la letra del NIF no se corresponde');
            return false;
        }else{
            //alert('Dni correcto');
            return true;
        }
    }else{
        //alert('Dni erroneo, formato no válido');
        return false;
    }
}

Popularity 3/10 Helpfulness 3/10 Language javascript

Source: trellat.es

Tags: javascript

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Contributed on Oct 24 2022

V1CTOR-cloud

0 Answers Avg Quality 2/10

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