brunobuddy
/ validateRegistrationNumber.ts
Created
June 8, 2018 09:50
TypeScript SIRET Validation Script (French company registration number)
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| // Returns true if valid, false if not. Note that registrationNumber param is a string (usually provided by HTML imput) | |
| validateRegistrationNumber(registrationNumber: string): boolean { | |
| if (registrationNumber.length !== 14) { | |
| return false | |
| } | |
| let sum = 0 | |
| let digit: number | |
| for (let i = 0; i < registrationNumber.length; i++) { | |
| if (i % 2 === 0) { | |
| digit = parseInt(registrationNumber.charAt(i), 10) * 2 |