# Finding the date at which money deposited equals a specific amount in JavaScript

JavascriptWeb DevelopmentFront End Technology

## Problem

We have an amount of money amt > 0 and we deposit it with an interest rate of p percent divided by 360 per day on the 1st of January 2021. We want to have an amount total >= a0.

Our function should take these three parameters and return the date at which the amount will be equal to the desired amount

## Example

Following is the code −

Live Demo

const principal = 100;
const amount = 150;
const interest = 2;
const findDate = (principal, amount, interest) => {
const startingDate = new Date('2021-01-01')
const dailyInterestRate = interest / 36000
let startingMoney = principal
let daysPassed = 0
while (startingMoney < amount) {
daysPassed++
startingMoney += startingMoney * dailyInterestRate
};
startingDate.setDate(startingDate.getDate() + daysPassed)
return startingDate.toISOString().split('T')[0]
};
console.log(findDate(principal, amount, interest));

## Output

2040-12-26
Published on 17-Apr-2021 13:11:09