We are using (html, css, and Javascript) Build a web application that has a simple calculator on it. This calculator needs to have buttons for the user to interact with it.

Content

The page must feature a calculator that has buttons so users can enter any positive integer. It also needs to support the following mathematical functions: addition, subtraction, multiplication, and division. As well as an equal button so that it performs the operations and a clear button to clear out the user input.

Like a simple calculator, the user should be able to click buttons to enter a number, and then press an operation and then key in another number. If the user clicks the equal button, it will perform the operation. However, the user can choose to do another mathematical operation instead, so they can perform complex operations.

If the user clicks the enter button and receives their results, they can choose to do another mathematical operation on the number or enter in a new number that replaces the old. This functionality should be similar to the default Windows calculator, in that regard.

The calculator needs to be mathematically accurate.

IT WILL BE REJECTED IF:

You use inline CSS or JavaScript

You have CSS outside of the head tag

You use any third party JavaScript libraries (third party CSS libraries are okay)

You dont enable JavaScripts strict mode

You use var instead of let

You dont use the EventListener API

Your page doesnt pass: https://validator.w3.org/

If the page doesnt render and work properly across Google Chrome and Mozilla Firefox