Doing the practice excercise in the first chapter of the book by Kyle called You Dont Know Javascript Going & Up

PracticeGoing&UpYDKJS.js

const taxRate = 0.07;
const phonePrice = Number(prompt("What is the price for the phone you are looking for?"));
const accessoryPrice = Number(prompt("How much bucks does the accesory cost?"));
const spendingThreshold = 200;

var accountBalance = Number(prompt("How much IS YOUR BANK ACCOUNT?"));

function calculateTax(purchasePrice){

	return purchasePrice + purchasePrice*taxRate;
}

function formatPrice(priceToBeFormatted){
	return  priceToBeFormatted.toFixed(2) + "$";
}

while(accountBalance>0){
	var thisPurchasePrice = phonePrice + accessoryPrice;
	console.log("You are going to buy expending: " + formatPrice(calculateTax(thisPurchasePrice)) );
	if(accountBalance>calculateTax(thisPurchasePrice)){
		accountBalance -= calculateTax(thisPurchasePrice);
	}else{
		break;
	}
	console.log("Your account is now: " + accountBalance);
}
console.log("You have finished buying");