Asynchronous programming in JavaScript is made possible by the event loop. With JS, all operations occur on a single thread, but we can create the illusion of multi-threading by using smart data structures. Event loop takes care of anything that's async using a queue and listener. 

So, when an async function has to be executed (or an I/O has to be PERFORMED), the main thread sends it to another thread, allowing v8 (Javascript engine) to continue running its code. The event loop consists of different phases with specific tasks like pending callbacks, close callbacks, timers, idle or prepare, poll, check, with different FIFO (First-In-First-Out) queues.

In an era of economic uncertainty, web development is one of the most promising careers to pursue. In spite of this, web developer interviews can be intimidating, and if you are unprepared, you will become overwhelmed and lose CONFIDENCE. In order to be competitive, you must be able to have a competitive edge and skill sets that set you apart from the REST. To be successful, you must have a thorough understanding and hands-on experience with integrating new technologies, CSS3, HTML5 APIs, front-end scripting language libraries, and LANGUAGES like JavaScript, Python, PHP, etc. Furthermore, you must be knowledgeable about configuring applications on web servers and databases, managing SEO keywords, browser compatibility and web security.

Hope you found this article informative and helpful in CLEARING your doubts. Wishing you success in your next interview.

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