This tutorial discussed how to work with date and time in JavaScript with and without external libraries. Working with dates is always painful in almost (if not all) programming languages.

Luxon is a modern lightweight library for parsing, validating, manipulating, and formatting dates in JavaScript.

Executing JavaScript code will definitely involve the processor cache and a high-resolution timer is accessible via browser performance API.

Chrome will soon throttle JavaScript timers in the background, so the browser uses significantly less power.

Remember that I mentioned JavaScript stores the time elapsed since the epoch time in the Date object? We can pass this elapsed time value, called a timestamp, to indicate the date we are creating.