what's the difference between null and undefined values in JavaScript

Question

what's the difference between null and undefined values in JavaScript, and please i need an code example of both of them, so i'll understand

Answer 1

This is a great question in JS.

These things👇 helps while trying to fiddle and understand undefined and null.

- Doing equality comparisons.
- Using typeof operator
- scope analysis
- Type coercion behavior ( Ex. both are falsy values in Boolean)

BUT here's the main difference.
We set null ourselves to imply that there's no value there.
But undefined mostly stays by default.

Here's a quick code that might help.

https://sololearn.com/compiler-playground/WWEd43DDYFGZ/?ref=app

Answer 2

<BernieByte>
The following threads might help you:-

https://www.sololearn.com/Discuss/1772843/?ref=app
https://www.sololearn.com/Discuss/3067338/?ref=app

Answer 3

Hi <BernieByte> the Q&A Search feature can sometimes help you find your answer. It is usually quicker than waiting for someone to respond to your post. I found that this question was asked before. You may find your answer here:

https://www.sololearn.com/Discuss/3067338/?ref=app