AIDC Toolkit / GS1 / checkDigitSum

Function: checkDigitSum()

checkDigitSum(exchangeWeights, s): number

Defined in: src/check.ts:53

Calculate the check digit sum for a numeric string as per section 7.9.1 of the GS1 General Specifications.

Parameters

exchangeWeights

boolean

If true, start the weights at 1 instead of 3 on the right.

s

string

Numeric string.

Returns

number

Accumulated sum of each digit multiplied by the weight at its position.