Issue with Angular2 discount calculation formula malfunctioning

Question

I'm encountering a rather perplexing issue with Angular2/Typescript.

My goal is to compute the final price based on a specified discount value. Here's the formula I am using:

row.priceList = row.pricePurchase + (row.pricePurchase * row.markUp / 100);

All the variables are declared as numbers.

When I attempt to execute the formula and display the values, inputting pricePurchase as 1 and markUp as 0, the outcome is 10?

How can this be happening and what steps should I take to correct it?

Appreciate your assistance.

Answer 1

Answer №1

If you want to experiment, you could attempt using the Number function like so:

const purchase = Number(row.pricePurchase);
row.priceList =  purchase + (purchase * Number(row.markUp) / 100);

Alternatively, you can use the shortcut you already mentioned that involves using the + operator:

const purchase = +row.pricePurchase;
row.priceList =  purchase + (purchase * +row.markUp / 100);

Answer 2

If you want to experiment, you could attempt using the Number function like so:

const purchase = Number(row.pricePurchase);
row.priceList =  purchase + (purchase * Number(row.markUp) / 100);

Alternatively, you can use the shortcut you already mentioned that involves using the + operator:

const purchase = +row.pricePurchase;
row.priceList =  purchase + (purchase * +row.markUp / 100);

Answer 3

The issue was resolved by modifying the formula to:

+row.pricePurchase + ((+row.pricePurchase * +row.markUp) / 100);

Answer 4

The issue was resolved by modifying the formula to:

+row.pricePurchase + ((+row.pricePurchase * +row.markUp) / 100);