JS subtracting numbers when one has decimal and does not

Question

I have two vars that I need to subtract from one another.

My code is

var discountedTotal = totalAmount - discountAmount;

totalAmount is static and that value is 3,916.64

discountAmount is entered via an input and is a round number i.e. 500

so discountedTotal = 3,916.64 - 500;

I am getting a result of NAN, what is the best way to handle this scenario? Thanks

Answer 1

var totalAmount = '3,916.64';
var discountAmount = 500;

totalAmount = parseFloat(totalAmount.replace(',','')); 
console.log(totalAmount); 
discountedTotal = totalAmount - discountAmount;
console.log(discountedTotal); 

Try this. Hope it helps.