Javascript web calculator

Performs simple calculations as well as advanced ones as exponent, rooting, nth rooting, factorization, calculation a logarithm.

⚠ Warning! This app works stable with Google Chrome only.

Local installation

1. Clone this repo to your local machine

git clone https://github.com/ClarityOfMind/lecture_09.git

2. Start up local static server

npm run start

Development installation

1. Clone this repo to your local machine

git clone https://github.com/ClarityOfMind/lecture_09.git

2. Go to the project's root directory

3. Run

docker-compose up

4. Open your browser on "localhost:8080" to observe the app.

Design patterns used

1. Decorator

src/js/index.js   // line 5,6

2. Memoization

src/js/calculator/core/calculations.js   // line 34

3. Composite

src/js/calculator/calculator.js   // line 12

4. Observer

src/js/calculator/calculator.js   // line 11

ES6 features used

1. Class

To reach module approach and make apllication's expansion fast and easy.

2. Const

To ensure immutability of data assigned to variables.

3. Let

To limit variables' scope.

4. Arrow function

Use as a callback function to make parent's function context available.

5. Destructuring assignment

syntactic sugar for quick writing and neat code style,

Contributing

1. Fork it (https://github.com/yourname/yourproject/fork)
2. Create your feature branch (git checkout -b feature/fooBar)
3. Commit your changes (git commit -am 'Add some fooBar')
4. Push to the branch (git push origin feature/fooBar)
5. Create a new Pull Request

Author

Dmitry Vasilev