Calculator

A simple calculator that supports the 4 basic operations on decimal numbers and grouping of terms using parentheses.

Features

Dark & light theme. The selected theme is restored when the page reloads.
If the user has not selected a theme, the applied theme is always synchronized with the system theme.
Calculations are saved in history and can be reloaded.
History is restored when the page reloads.
Keyboard input is supported.
Arbitrary precision calculations with decimal.js.

Accessible + screen reader friendly.
Variation of the MVC pattern (only for inputting expressions, performing calculations, and displaying the results).
Expressions are calculated with the Shunting yard algorithm.

The project is written in HTML, CSS, JavaScript.

The following dependencies will be installed via npm install:

Run the development version:

npm run dev

Build the project:

npm run build

Build & serve the production version:

npm run serve

Vitest is used for testing.

Currently, only a basic set of tests has been written for the basic model operations, such as inputting and calculating expressions.

Run the tests:

npm run test

or, if you prefer access to the browser UI:

npm run test:ui