Why iife appears in javascript interviews

TL;DR

This video discusses the importance of Immediately Invoked Function Expression (IIFE) in JavaScript and demonstrates how to write code in the IIFE style.

Transcript

hey there everyone atesh here back again with another video and in this video i want to share you something interesting about javascript iffy and well the interview experience so a couple of weeks ago oh time is flying a little more than a month ago i was taking this interview for a payment gateway company now this interview was meant for react dev... Read More

Key Insights

• 👨‍💻 IIFE stands for Immediately Invoked Function Expression and is a coding style used by many programmers.
• 😤 Understanding IIFE is important for reading and understanding code written in this style, particularly in a team environment.
• 🧑‍🏫 IIFE is not commonly taught in online courses or YouTube videos as it adds complexity to explanations.
• 👨‍💻 IIFE is not necessary for most tasks but can be useful for working with different coding styles and reading code written by others.
• 👨‍💻 The demonstration in the video showcases the process of creating a basic web server using IIFE style of code.
• 👨‍💻 Different programmers have different coding styles, and it is important not to criticize or judge others based on their code style choices.
• 🎮 IIFE adds an additional layer of explanation when making instructional videos or courses, which is why it is often not discussed extensively.

Questions & Answers

Q: What is the significance of learning about IIFE in JavaScript?

Understanding IIFE is important because it is a coding style that many programmers use, and being able to read and understand code written in this style will make you more efficient in a team environment.

Q: Why is IIFE not commonly taught or discussed in online courses or YouTube videos?

Many instructors focus on teaching the fundamentals and foundations of JavaScript rather than specific coding styles like IIFE. Additionally, IIFE adds an extra layer of complexity to explanations, making it less preferred for instructional purposes.

Q: When should I consider using IIFE in my web development projects?

IIFE is not necessary for most day-to-day tasks, but it can be useful when working in a team where different coding styles are employed. It is also important for reading and understanding code written by others.

Q: Can you provide an example of how IIFE is used in the demonstration?

In the demonstration, the host creates a basic web server using IIFE style, where the code is immediately invoked within a function expression, allowing for encapsulated code execution.

Summary & Key Takeaways

• The video begins with the host sharing an interview experience for a payment gateway company where the candidate raised a question about IIFE.

• The host emphasizes the importance of understanding IIFE for reading code written in this style and highlights that different programmers have different coding styles.

• The video then provides a step-by-step demonstration of writing a basic web server using IIFE style of code.