Understanding Calculator Logic

The calculator interface is already prepared. Your job in this course is to make that interface work.

In this first module, you will connect the visual project to a simple application model. Before adding buttons and calculations, you will establish the state that the calculator needs to remember.

The key pattern for the course is:

User action → application logic → state change → UI update

By the end of this module, the project will have a JavaScript calculator state ready for the input and calculation features that follow.