https://secure.asanonline.org/nx/portal-static/js/donor-covered-fee/calculation.js

1
2
3function calcDonorCoveredFee(amount,percentageFee,fixedFee,additionalFee) {
4    //total_fee = ( ( percentage_fee * transaction_amount ) + fixed_fee ) / ( 1 - percentage_fee )
5    var scope={
6        amount: amount,
7        percentageFee: percentageFee,
8        fixedFee: fixedFee,
9        additionalFee: additionalFee
10    }
11    return math.evaluate('((percentageFee*amount)+fixedFee)/(1-percentageFee )+additionalFee',scope).toFixed(2);
12}
13
14function calcDafFee(amount,chariot_percentage,additionalFee) {
15    let scope={
16        amount: amount,
17        percentageFee: chariot_percentage,
18        fixedFee: 0,
19        additionalFee: additionalFee
20    }
21    let fee = Math.ceil(math.evaluate('((percentageFee*amount)+fixedFee)/(1-percentageFee)',scope));
22    return Math.ceil(fee+Number(additionalFee));
23}
24
25function addAmountAndDonorCoveredFee(amount,donorCoveredFee){
26  var scope={
27    amount: amount,
28      donorCoveredFee: donorCoveredFee,
29  }
30  return math.evaluate('amount+donorCoveredFee',scope).toFixed(2);
31}
32
33function addAmountAndDafFee(amount,donorCoveredFee){
34    return Math.ceil(amount+donorCoveredFee);
35}