TypeScript Tutorial #15 - Interfaces

Hey all, in this TypeScript tutorial we'll take a look at interfaces - which help to define the structure of objects.

🐱‍👤🐱‍👤 JOIN THE GANG -
----------------------------------------
🐱‍💻 🐱‍💻 My Udemy Courses:

🐱‍💻 🐱‍💻 Course Files:

🐱‍💻 🐱‍💻 Other Related Free Courses:

🐱‍💻 🐱‍💻 TypeScript Docs:

🐱‍💻 🐱‍💻 The Net Ninja Community Boards:

[Oswee]

You should mention about Interfaces vs Types so that people do not get confused later. :) And in oposite. Mention Interfaces when talking about Type.

[joaopedroschmitt]

I think interfaces intention is not about class structure only, but about creating an abstraction (contract) between two domains that allow you to decouple one part from another by not requiring one part to understand the details of the implementation. A better explanation can be found by searching for the principles of Dependency Inversion, or, Dependency Injection. Interfaces is an essential tool for polymorphism

[ardavanansari]

first thing I do before watching a NetNinja video : hit the like button

[eggziom]

Found naming interfaces a little bit confusing in the tutorial
An interface basically describes functionality the object must have so you can interact with it. "Is-something" sounds more how you should name a type guard.
I personally prefer just "Person". In the wild, you also may come across a convention to precede interface names with "I" (from "interface"; "IPerson"), like it was popular in Java, for example

[pulkitaggarwal]

Hi, Could you please elaborate difference b/w interface and type for defining any type like isPerson in this video

[boykasarboo]

Hi! bro you are one of my favorite teachers..Stay blessed..

[Shakeel]

Thanks Shaun for the wonderful tutorial series.

[usama_khalid]

your videos are great. i have a request - please make videos on Nuxt js (Vue ssr)

[rahulyavvari]

Shaun is the best!

@1:23 Maybe we have a method speak, cz people speak (lol : ) )

[Pylogicx]

Thanks, a lot. You have saved me time.

[andikasaputra]

So, what is the difference between type & interface?

[NikiL]

Why wouldn't I just create a type alias of an object with these properties?

[mylesdavies]

It's odd that you can't extend the object with additional properties. Surely as long as it still satisfies the interface, additional properties shouldn't be a problem. This would be allowed in C# for example and would be very common, for example an object implementing multiple interfaces through a range of different properties and methods.

[cyanfroste]

interfaces are mostly used with classes to define a class, but in js, classes are just glorified objects. so the differences are very small.

[victoradeniji]

Thank you so much for this. Thank you.

[bouamarelouahhabi]

I hope after this series you do another one about mern or mevn stack with typescript (a big one, it could be in udemy), you're the best man!

[johnconnor]

What is the difference between Interface and Type aliases?

[priyojitsingha]

So interfaces can be considered as schemas for a object, am I right?

[crucru]

Which syntax highlighter do you have enabled here? very cool

[avigarg]

how can we use pick utility type on new someone person you made from same interface"inperson"