https://medium.com/nuances-of-programming/7-%D0%BF%D0%BE%D0%BB%D0%B5%D0%B7%D0%BD%D1%8B%D1%85-%D0%BC%D0%B5%D1%82%D0%BE%D0%B4%D0%BE%D0%B2-%D0%BE%D0%B1%D1%8A%D0%B5%D0%BA%D1%82%D0%BE%D0%B2-javascript-e8669c7664b5
