JavaScript asynchronous programming allows you to handle functions that might take a long time to perform. Some of these may include fetching data from an external server, reading files or performing time-consuming tasks.
SOLID is an acronym that represents five fundamental principles of object-oriented design and programming. These principles aim to create maintainable, extensible, and testable software systems.
Web browsers provide built-in methods and objects known as JavaScript web APIs (Application Programming Interfaces). These objects and methods interface with different parts of the browser’s functionality and web page manipulation by JavaScript.