3 Ways To Copy Objects in JavaScript (Spread, Assign & JSON) 

Fourth Way: const myDeepCopy = structuredClone(myOriginal); Structured cloning addresses many (although not all) shortcomings of the JSON.stringify() technique. Structured cloning can handle cyclical data structures, support many built-in data types and is generally more robust and often faster. However, it still has some limitations that may catch you off-guard: Prototypes: If you use structuredClone() with a class instance, you’ll get a plain object as the return value, as structured cloning discards the object’s prototype chain. Functions: If your object contains functions, they will be quietly discarded. Non-cloneables: Some values are not structured cloneable, most notably Error and DOM nodes. It will cause structuredClone() to throw.

To get out of that hairy situation with spread is to have another spread inside. e.g: const copiedUser = { ...user, friends: [....user.friends] }; With this, we'll create a copy of the friends array as well So if you then insert a new friend in the main user user.friends.push('dom') it will not appear in the array of friends of the copiedUser user.friends: ["Matt", "Ange", "Johhny", "dom"] copiedUser.friends: ["Matt", "Ange", "Johhny"]

Great explanation!

Can u do any real time projects in JavaScript

Hello, very nice, I like your videos. Here master JS fullstack developer.. I would like to start a server using rust programming language but there are very few videos for this topic. I saw u already made some rust tutorials... I watched them all. could you do more about creating web server using rust ? If someone interesting as well please like the comment ...

Awesome!!

thanx

really a great helpful video , sir can you make a video on javascript fullpage vertical scoll similar to fullpage js like in vanilla js

When I find myself in times of trouble Dom's videos come to me Speaking words of wisdom Spread Ass▓▓▓ ▓SON

Deep copy via JSON is a really bad idea. As you mentioned it will not work for Date and basically any other complex type because in that way we copy only data and loose completely information about type/prototype and also we have problem with conversion to/from string.

Tut on Buttercake css framework?

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1.(...user) ; 2.Object.assign((), user) ; 3.JSON.pare(JSON.stringify(user)) ; Which one is the best for developer