Type Conversion in JavaScript: Interview Questions & Answers

Type Conversion in JavaScript: Interview Questions & Answers | Tutorial

Greetings and welcome to this video on JavaScript Interview Questions and Answers! My name is Michelle AI, and our focus today is on JavaScript Type Conversion, a topic frequently discussed in front-end 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.

#JavaScript #TypeConversion #InterviewChallenge

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CHAPTERS:

00:00 Introduction: Type Conversion and Type Coercion
00:58 What is the difference between explicit and implicit type coercion?
01:38 How is explicit type coercion implemented in JavaScript?
02:21 Name one method that automatically converts a value, to a string.
03:04 What built-in object do we use to explicitly convert values to a string?
03:45 When do numeric conversions happen in JavaScript?
04:25 What object do we use to explicitly convert values to a number?
04:57 What is the result of an explicit attempt to convert a non-number to a number?
05:33 If there is an attempt to convert an undefined value to a number. What will the return result be?
06:11 What is the return result in JavaScript when attempting to convert a null value to a number?
06:49 In JavaScript, What is the return value when you attempt a numeric conversion of true or false?
07:29 Give a brief description of the potential outcomes when converting a string to a number in JavaScript.
08:08 Do Boolean conversions happen implicitly, explicitly, or both?
08:48 Are there any functions we can use for explicit Boolean conversions?
09:26 In the context of Boolean conversion, which values evaluate to false and which values evaluate to true?
10:01 What is the Boolean return value for the string "0" in JavaScript?
10:36 What are the three widely used type conversions in JavaScript?
11:15 What is type coercion in JavaScript?
11:52 What is the toString() method in JavaScript?
12:23 What are the falsy values in JavaScript?
13:00 In what ways can we check if a value is falsy in JavaScript?
13:43 In JavaScript, What are Wrapper Objects?
14:25 What does the 0 || 1 conditional expression return?
15:05 What is the valueOf() method in JavaScript?
15:44 Conclusion: Type Conversion and Type Coercion