Immutability in JavaScript

This video explains the difference between Mutable and Immutable in JavaScript and how this is connected to:
- const vs let
- primitives vs objects
- Object freezing and sealing
- Object chaining
- Proxies
- new upcoming JavaScript DataTypes

Videos referenced during tutorial:
Object Freeze and Seal:

Shallow vs Deep copy:

Chaining Methods:

[rajesht]

Thank you Mr Steve for the detailed explanation. Waiting for the next video.

[tochimclaren]

As usual, great tutorial. You are my visual/video documentation, reading documentation can be tricky. Thank!

[Sarmadfarhankhan]

These Are the basics, very well explained and in detailed. 👍

[nevenkosovec]

Thank you, amazing content and explanation as usual!

Also wanted to add that I really benefited from your pub-sub pattern tutorial, and understanding it helped so much with learning Redux. Plus I also got asked about it in job interviews (along with immutability in JS).

I know you have a long list of topics you want to cover, I just hope more design patterns are on it as well, just throwing it out there. 🙂

Thanks, professor!

[oah]

that makes much more sense now. Thx, amazing content as usual :)

[thatsisjustcrazy]

Another great video, Steve! Thanks!

Question: Which video did you provide a suggestion for how to isolate code to prevent conflicts? I remember a variable called APP or something. Do you remember? Thanks!

[persiansayed]

Thank you, professor, quality contest as always.

I have one question regarding those new Data Types. Where do you get to see the proposed changes? Is there any documentation for it like we've RFCs for network protocols?

[ivaldirbatalha]

Thank you for your explanation, cleared a lot of things i was struggling with!
A question tho, as primitives are just values, that we can't change. In javascript, let's say i create a let number = 5, if i change it like number = "five", would javascript create a new variable with a string primitive type variable instead and eliminate the old one?

[benralph]

Could you please explain the concept regarding value types being immutable a bit more. Based on the explanation it looked like a type is immutable when its contents cannot be changed. However for e.g. if we have an int we can change its value from 5 to 6 or any other number. Then how come its immutable?

[martyrdm]

Great video 😊
Also please make tutorial on angular material buttons with ripple effect with Vanilla JS

[prince]

14:49 the summary of the lecture if anyone doesn't have the time.

[hamidRaven]

a question . "use strict" for me doesn't work as you said it doesn't cause error . is it because of running codes in browser and in node it gives error or i am wrongdoing?
tnx for all content generally🙂

[DanielBrownsan]

Another hidden lesson - never set your microphone on your desk when creating tutorial videos. ;)