Created
April 7, 2021 16:31
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Chile RUT Validation
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var ruts = [ | |
'12.678.579-8', // Valid - with extra digits | |
'76086428-5', // Valid | |
'220604497', // Valid no dash | |
'12531909-2', // Valid | |
'76.498.451-K', // Valid - with K verification number | |
'76086428', // Invalid missing verificationNumber | |
'12.678.579-7', // Invalid verificationNumber | |
'76.498.451-0', // Invalid verificationNumber | |
]; | |
function validateRut(rawRut) { | |
var rut = String(rawRut); | |
var result = { | |
valid: true, | |
rawRut: rawRut, | |
parsedRut: null, | |
rutOnly: null, | |
verificationNumber: null, | |
message: '' | |
}; | |
// Strip all non-numeric | |
rut = rut.replace(/[^0-9K]/g,''); | |
result.parsedRut = rut; | |
if (rut.length !== 9) { | |
result.valid = false; | |
result.message = 'RUT is not correct length; should be 8 digits'; | |
return result; | |
} | |
var verificationNumber = rut.slice(-1); | |
result.verificationNumber = verificationNumber; | |
rut = rut.slice(0,-1); | |
result.rutOnly = rut; | |
var reversed = rut.split('').reverse().join(''); | |
var total = 0; | |
var multiplier = 2; | |
for (var i=0; i<reversed.length; i++) { | |
total += multiplier * reversed[i]; | |
multiplier++; | |
if (multiplier > 7) { | |
multiplier = 2; | |
} | |
} | |
var mod11 = total % 11; | |
var actualVerificationNumber = 11 - mod11; | |
if (actualVerificationNumber === 11) { | |
actualVerificationNumber = 0; | |
} else if (actualVerificationNumber === 10) { | |
actualVerificationNumber = 'K'; | |
} | |
if (String(actualVerificationNumber) !== verificationNumber) { | |
result.valid = false; | |
result.message = 'Failed verification number check'; | |
return result; | |
} | |
console.log('verificationNumber', verificationNumber); | |
console.log('rut', rut); | |
console.log('reversed', reversed); | |
console.log('total', total); | |
console.log('mod11', mod11); | |
console.log('actualVerificationNumber', actualVerificationNumber); | |
return result; | |
} | |
for (var r in ruts) { | |
var rut = ruts[r]; | |
console.log('testing', rut); | |
var result = validateRut(rut); | |
console.log(result); | |
} |
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