12 Useful JavaScript Interview Tips

Part 3: A list of some of the common knowledge points that you must know about JavaScript

This series of articles has compiled a list of some of the common knowledge points that you must know about JavaScript, which will give you great confidence whether you are interviewing or developing on a daily basis.

In the previous article we listed some general knowledge points which you can view by clicking on the following links：

Must-know knowledge of JavaScript

Must-know knowledge of JavaScript I

1. What is a `Set’ object and how does it work?

Set object allows you to store unique values of any type, whether they are primitive values or object references.

We can create a Set instance using the Set constructor.

const set1 = new Set();
const set2 = new…