Part 7–100 Advanced JavaScript Interview Questions with Answers and Code Examples

Part 7–100 Advanced JavaScript Interview Questions with Answers and Code Examples

Welcome to the Seventh part of our series on advanced JavaScript interview questions!

In this article, we’ll continue exploring ten more challenging questions that will test your knowledge of JavaScript concepts and techniques. Each question is accompanied by a detailed answer and code examples to help you understand the topic thoroughly. Additionally, we’ll provide external links for further reading to enhance your understanding. Let’s dive in!

61- What is the purpose of the “padStart()” method in JavaScript strings? Provide an example.

Answer: The padStart() method pads the current string with another string until it reaches the specified length. This is useful for adding leading zeros or other characters. Here's an example:

const str = '5';
console.log(str.padStart(3, '0')); // Output: 005

Further Reading: MDN Web Docs — String.prototype.padStart()

62: How can you remove whitespace from the beginning and end of a string in JavaScript? Provide an example.