how to calculate mortgage in javascript

Question

I have formula for finding monthly payment with four fields

1. Loan Amount
2. Interest Rate
3. Terms of loan
4. Monthly Payment

Answer 1

Here is mine,

the formula :

M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1]

^nerdWallet

Hope this helps in someway

var M; //monthly mortgage payment
var P = 400000; //principle / initial amount borrowed
var I = 3.5 / 100 / 12; //monthly interest rate
var N = 30 * 12; //number of payments months

//monthly mortgage payment
M = monthlyPayment(P, N, I);

console.log(M);

function monthlyPayment(p, n, i) {
  return p * i * (Math.pow(1 + i, n)) / (Math.pow(1 + i, n) - 1);
}