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Greetings and welcome to this video on JavaScript Interview Questions and Answers! My name is Michelle AI, and our focus today is on JavaScript Function Expressions, a topic frequently discussed in frontend interviews. As we explore this subject, you will deepen your understanding of JavaScript and refine your skills for your next JavaScript interview.

During the video, we'll pose a question for you to answer, followed by the correct response. We will give you 15 seconds to answer each question. Optionally, you can pause the video if you need more time.

Although we will be focusing on interview responses, it's essential to be familiar with the technical aspect of each topic. You can find detailed technical responses, under the Function Expressions category on our website, at HelloJavaScript.info.

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Chapters

00:00 Introduction
00:59 Can a function be classified as a function, an object, or both?
01:32 What is the purpose of using a function expression?
02:06 How do you declare a named function expression?
02:41 What distinguishes using a function declaration from a function expression?
03:19 How do function declarations and function expressions differ in terms of page loading behavior in JavaScript?
03:57 Describe the JavaScript function expression’s code structure and behavior.
04:42 Are function values in JavaScript? If yes, please explain.
05:22 Why is there a semicolon at the end of a function expression?
05:58 Is removing a function declaration from global scope possible, or is a function expression more suitable for handling desired actions?
06:51 When should you use a function declaration vs. a function expression?
07:35 What is the difference between a named and anonymous function expression?
08:19 How do you declare an anonymous function expression?
08:53 Can you pass a function expression as an argument to another function?
09:33 Can you return a function expression from another function?
10:11 What is the scope of a function expression?
10:45 How do you create a self-invoking function expression?
11:35 Can you call a function expression before it is defined?
12:11 What is the value of the 'this' keyword inside a function expression?
12:58 Conclusion - JavaScript Function Expressions