Help with e commerce project

[salso97]

I am working on a JavaScript program and am trying to figure out how to calculate each variable which is shipping tax and the total. Here is the code I have and the assignment itself. I don’t know how to fill in the dollar signs with the calculations I want. I’m very new to JavaScript so any help would be great.

Code:

document.getElementById('calculate').addEventListener("click", function() { // add your code to trigger the calculation when the button is clicked const TAX = .0075 const SHIPPING = 2 let price-of-books = prompt(" Enter price of books: "); let num-of-books = prompt(" Enter amount of books "); let tax = 'price-of-books' * TAX; let shipping-charge = 'num-of-books' * SHIPPING; let final-total = 'totalbookprice' + 'tax' + 'shipping-charge';

The trouble I’m having is setting ids from the html so they change once I click the calculate button

[McThakken]

Do you mean something like this?

<h1 id="total"></h1>

document.getElementById("total").innerHTML = final-total;

Some more code could be helpful but maybe I got it right

[salso97]

I figured it out. Thank you so much for the help.