PMT in Javascript

Question

I am trying to code the equivalent to the EXCEL PMT function.

in JavaScript, the formula looks like this:

function PMT (ir, np, pv, fv ) {
 /*
 ir -          


        

Answer 1

I am not a math wiz, but a simple google search turned this thread up:

http://www.excelforum.com/excel-general/370948-pmt-function-does-anyone-know-the-formula.html

Here he has the following formula for type=0:

pmt = ((pv - fv) * ir / (1 - (1 + ir) ^ -(np)));

Maybe this will work for you :)