Learn TypeScript - Full Tutorial

Learn how to program with TypeScript in this full course for beginners. TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. TypeScript provides better error checking than JavaScript. This is because TypeScript uses a static type system, which means that the type of a variable is checked before the code is executed.
💻 GitHub Repo: github.com/hiteshchoudhary/ty...
✏️ Hitesh Choudhary created this course. Check out his channel: / hiteshchoudharydotcom
⭐️ Contents ⭐️
⌨️ (0:00:00) Why to learn TypeScript
⌨️ (0:07:08) TypeScript is not what you think
⌨️ (0:15:25) How to install TypeScript
⌨️ (0:27:33) Your first intro to TypeScript docs
⌨️ (0:39:21) Number, boolean, and type inference
⌨️ (0:39:21) Number, boolean, and type inference
⌨️ (0:46:52) Don't use ANY
⌨️ (0:51:30) Do you really know functions
⌨️ (1:02:55) A better way to write function
⌨️ (1:15:38) Bad behavior of objects
⌨️ (1:25:14) Type Aliases
⌨️ (1:32:28) READONLY and optional
⌨️ (1:42:13) Array
⌨️ (1:50:03) Union Types in TS
⌨️ (2:04:46) Tuples
⌨️ (2:14:33) Enums
⌨️ (2:24:03) interface
⌨️ (2:33:52) Interface vs Type
⌨️ (2:39:08) How to setup Typescript for real projects
⌨️ (2:53:44) Classes
⌨️ (3:02:06) Private Public
⌨️ (3:08:12) Getters and Setters
⌨️ (3:15:25) Protected
⌨️ (3:19:34) Why Interface is important
⌨️ (3:26:05) Abstract class
⌨️ (3:35:36) Generics
⌨️ (3:47:58) Generics in Array and Arrow functions
⌨️ (3:56:07) Generic Classes
⌨️ (4:07:16) Type Narrowing
⌨️ (4:17:04) The in operator narrowing
⌨️ (4:22:17) Instanceof and Type Predicates
⌨️ (4:31:35) Discriminated Union and Exhaustiveness Checking with never
⌨️ (4:42:54) TypeScript End
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[@HiteshChoudharydotcom]

Thanks for sharing the video. Feel free to ask any doubt here, I will try to answer them. Also, I am on my way to contribute more videos to #freecodecamp Stay tuned

[@soumadip_skyy_banerjee]

❤️

[@piyushsachdeva5129]

Keep publishing such amazing content❤️

[@itis5931]

#women_life_freedom #برای

[@laxmanadhikari3989]

❤️thnx Hitesh

[@UCSRimiSaha-pk8db]

Sab

[@hamsitava5725]

After this course I learned that 70% of viewers are not subscribers and we shall hit the subscribe button. Thank you Hitesh

[@manan09ful]

What about Typescript? Didn't you learn that? 😅

[@cowabunga2597]

@@manan09ful no 😀

[@mrd.j.2303]

Hahaha. So true. I’m gonna go subscribe now. Like 20 times.

[@galievramil1169]

😂😂😂 Exactly, too.much self advertising

[@RaviPrajapati-uy1wm]

This is amazing typescript series I love it❤❤

[@manylovv]

Hey, thank you for the course, but I think you might be wrong at 1:18:30 You create a function "createUser", that takes in object with "name" and "isPaid" properties. But instead of giving them a type, you destructuring the object and reassigning "name" to "string" and "isPaid" to "boolean", But object itself still has "any" type! function createUser({ name: string, isPaid: boolean }) {} Same as: function createUser({ name: string, isPaid: boolean }: any) {} Almost same as: function createUser({ name, isPaid }) { ---> type is still "any" const string = name const boolean = isPaid } I think you wanted to to something like this instead: function createUser({ name, isPaid }: { name: string, isPaid: boolean }) {} Or this: type User = { name: string, isPaid: boolean } function createUser({ name, isPaid }: User) {} Y'all can try to code this in typescript playground, if you don't believe me www.typescriptlang.org/play Info about Destructuring assignment (from MDN): developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment I hope it will help someone to feel less confused in this tough topic

[@horacinis]

Huh glad you took the time to write this comment clarifying that, I was replicating what he did in Typescript playground and it was erroring, I then I asked ChatGPT what was wrong with the function and the response was basically changing the structure of the function to how you have done it in your comment. Thanks for doing that good man!

[@OCTsecond]

thank you for your explaination

[@thecalgarians4597]

I spent half hour on this before I started wondering if someone highlighted this in the comments. Thanks man, great explanation

[@RiteshKumar-tx1gn]

❤

[@prakashaspanaroma]

🎯 Key Takeaways for quick navigation: 00:00 📖 Introduction to the TypeScript Tutorial Series 01:21 🧐 Understanding TypeScript's Place in the Ecosystem 02:17 🚀 Diving Deep into TypeScript Characteristics 03:37 💡 The Importance of TypeSafety in TypeScript 04:59 🔍 TypeScript and TypeSafety 06:46 🎢 Beginning the TypeScript Journey 07:42 🛠️ Understanding TypeScript's Core Functionality 09:30 🖥️ TypeScript's Role in Development 10:52 🔄 Conversion of TypeScript to JavaScript 11:50 🧰 TypeScript as a Development Tool 15:23 📘 The Importance of Hands-On Learning 16:23 🖥️ Installing TypeScript System-Wide 17:45 🔧 TypeScript Installation Steps 20:57 🚀 Running TypeScript with TSC Command 21:55 🎯 Setting Up the Development Environment 22:18 ✍️ Basic TypeScript Syntax 24:11 🔧 Compiling TypeScript to JavaScript 26:03 ⚙️ TypeScript Configuration & Playground 27:19 🎓 Emphasis on Documentation & Learning Pace 28:42 📊 Understanding TypeScript Types 29:58 🚫 The Use of "any" in TypeScript 31:25 📚 TypeScript Documentation Exploration 32:19 🤝 TypeScript's Role in Collaboration 34:04 💡 TypeScript Syntax Basics 35:55 🔧 TSC Compilation and Handling Errors 36:52 🚫 Ensuring Data Type Consistency with TypeScript 37:41 🧐 Importance of Reading Documentation 38:34 🖊️ Writing and Understanding TypeScript Code 40:26 💡 Dive into Number Data Type in TypeScript 43:16 🛑 Avoiding Over-Annotation in TypeScript 44:11 🧠 TypeScript's Type Inference Mechanism 46:03 📖 TypeScript Syntax and Best Practices 46:56 ⚠️ Misuse of the "any" Keyword in TypeScript 48:21 📚 Official TypeScript Documentation on "any" 50:35 🚫 Avoiding "any" for Robust TypeScript Coding 51:30 🧐 Proper Use of Functions in TypeScript 52:26 📝 Basics of Function Creation and Error Handling 54:41 🚫 Avoiding Inaccurate Type Annotations 56:29 🔄 Converting Data Types within Functions 57:25 ✍️ User Signup Function Demonstration 57:51 🚦 Sign-Up Function Parameters and Types 59:44 🖊️ Login Function and Default Parameters 01:02:05 🔍 Ensuring Accurate Return Values 01:03:25 🌐 TypeScript Philosophy and Application 01:04:49 🛠️ Annotating Return Types in Functions 01:06:33 🔁 Understanding Multiple Return Types 01:07:58 🔄 Looping through Arrays with Map 01:11:10 📚 Redirecting to Documentation for Advanced Functions 01:12:06 ⚠️ Specifying Return Types: Void and Never 01:15:37 🧩 Odd Behaviors in TypeScript 01:16:34 📜 Objects in TypeScript 01:19:10 🛠️ Function Definitions & Object Exports 01:20:59 🔄 Functions Returning Objects 01:22:52 🤔 Odd Behaviors & Object Handling 01:25:11 📜 Type Aliases Introduction 01:26:36 👥 Using Type Aliases for User Data 01:28:49 📖 Documentation & Practical Usage 01:32:21 🔍 Quirky Behaviors & Specific Keywords 01:34:33 🚫 `read only` and Optional Properties in TypeScript 01:39:08 🔄 Combining Multiple Types 01:42:18 📋 Understanding Arrays in TypeScript 01:42:46 🌐 Defining Arrays in TypeScript 01:48:48 📖 TypeScript Array Documentation Review 01:50:12 🤝 Introduction to Union Types 01:50:38 🎤 Importance of Contextual Understanding 01:51:06 🤹‍♂️ Introduction to Union Types in TypeScript 01:53:24 🎥 Subscriber Engagement and Advanced Union Usage 01:58:56 🔍 Union Narrowing & Type Checking 02:00:44 📊 Union Types in Arrays and Classic Mistakes 02:04:46 🧩 Introduction to Tuples 02:07:03 📜 Restricting Array Order with Tuples 02:10:17 💡 Practical Implementation and Caution 02:14:20 🚩 Introduction to Enums 02:14:49 🎯 Enums: Definition and Basics 02:17:11 ⚙️ Implementing Enums in TypeScript 02:20:15 🔄 Enum Value Interpretation 02:22:24 🔄 Use of `const` with Enums 02:23:44 👤 Introduction to Interfaces 02:28:16 📜 Methods in Interfaces 02:30:09 🔖 Defining Methods in Interfaces 02:33:17 🖥️ Understanding the Role of Interfaces 02:34:14 🚀 Extending Interfaces & Inheritance 02:37:51 📚 Distinction between Type and Interface 02:39:16 🛠️ TypeScript in Production 02:41:08 🚀 Setting Up TypeScript for Projects 02:45:40 ⚙️ TypeScript Compilation Configuration 02:47:54 🌐 Using Live Server for TypeScript Projects 02:52:02 🎨 Styling and Further TypeScript Discussion 02:53:51 🌌 Introduction to Advanced TypeScript Use 02:54:45 🎓 Creating Classes in TypeScript 02:57:26 🔒 Using TypeScript for Data Safety 03:00:46 🛡️ Read-only Properties in TypeScript Classes 03:02:12 📌 Advanced TypeScript Concepts 03:03:08 🔐 Modifiers in TypeScript 03:07:40 🚀 Getters and Setters in TypeScript 03:09:58 📝 Setters in TypeScript 03:13:40 🚫 Private Methods in TypeScript 03:15:28 🔒 Access Modifiers and Inheritance in TypeScript 03:17:46 🖼️ Additional Class Properties in TypeScript 03:19:52 📐 Interfaces in TypeScript Explained 03:23:57 📹 Extending Interfaces for Additional Features 03:26:06 📜 Introduction to Abstract Classes in TypeScript 03:29:15 🖥️ Practical Implementation of Abstract Classes 03:33:18 🚀 Advanced Features of Abstract Classes 03:34:15 🔄 Abstract Classes Recap and Method Overwriting 03:35:41 🔗 Introduction to Generics in TypeScript 03:38:23 📖 Generics in Practical Coding and Documentation 03:42:21 🛠️ Differentiating Generics from Any in TypeScript 03:45:33 🍾 Creating and Implementing Custom Generics 03:47:48 📘 Diving Deeper into Generics and Arrow Functions 03:50:09 🔍 Basics of Defining Generics in TypeScript 03:52:47 🔄 Arrow Functions and Generics in TypeScript 03:55:29 📘 Distinguishing Generics Syntax in Codebases 03:56:20 🏛️ Deep Dive into Generics and its Constraints 03:57:49 📜 Using `extends` Keyword in TypeScript 04:01:28 📁 Database Interface and Generic Constraints 04:02:45 🎓 Selling Courses and Quizzes: Class Types in Generics 04:05:51 🛍️ Generic Class for Handling Products 04:07:12 📘 Business Case Logic vs Traditional Problems/Solutions 04:09:32 🚧 Cautionary Tales in TypeScript 04:14:26 📚 Understanding Type Guards 04:17:09 🔍 Advanced Type Narrowing Techniques 04:22:16 📉 More on Type Narrowing 04:22:45 🎯 Narrowing TypeScript Types 04:25:27 🐟 Using Type Predicates in TypeScript 04:29:33 🔄 Type Coercion and Identification 04:30:56 📄 Documentation-Based Learning 04:31:50 ⚙️ Tight Narrowing - Final Steps 04:37:10 🔄 Never Type & Exhaustive Checks 04:39:39 📚 Advanced TypeScript Concepts 04:42:55 🏁 Concluding the TypeScript Series Made with HARPA AI

[@isaahmed7777]

respect for creating this. respect++ for mentioning the AI you used

[@Viralvlogvideos]

Hitesh Choudhary is one of my favorite teachers who makes complex topics into simple. Great to see Hitesh here 😃

[@aarooral7997]

Finally i found you 😂😂 you are so famous Yarr 😂😂

[@Viralvlogvideos]

@@aarooral7997 how 🤔

[@aarooral7997]

@@Viralvlogvideos i know you from fsjs bro

[@alphadnu]

Yes! We can push elements to read-only properties having type array; because arrays are not explicitly represented, but only by their memory address. So, technically we are not changing the memory address of array by pushing elements inside it, and READONLY still validates upon the address of the array.

[@colinmarshall6634]

I learned JS as my first language and C# as my 2nd. TS is basically a combination of the two, and in a good way. Great series and you're an awesome teacher Hitesh!

[@davinder95]

u are ryt bro

[@manoyal]

What is Ienumerator equivalent in typescript.. I used it alot in my unity games

[@teodor-valentinmaxim8204]

I mean, yeah, writing "Hello, World!" is pretty much the same

[@serg1778]

Lol,I think you don't know C#,otherwise you wouldn't say that

[@gabrielgitonga1252]

He is a great teacher indeed

[@manomancan]

What an amazing teacher, honestly. So eloquent and to the point.

[@burhanuddinlokhandwala5871]

Thank you @Hitesh for creating a very easy-to-understand course. This is the 1st time I have seen approx 5 hours video tutorial and have not skipped a single part. This was on my todo watchlist for a very long time.

[@shamimara5161]

The flow of the tutorial was really great. Each topic is discussed very appropriately. And the approach to make the people read documentation is splendid and seen for the first time any instructor emphasizing upon it. Looking forward to a similar comprehensive course on Next.js and prerequisite for it from the same instructor if possible.

[@gulraizcodes]

Damn. Back in the days when I was learning coding I learned alot of Hitesh. Thank you very much for the helpful content. Time to learn TypeScript from this chad again. ✨

[@warriorprashant3067]

nostalgia hits

[@MuhammadFaiz-nr1uu]

Enums stands for Enumerations. Enums are a new data type supported in TypeScript. It is used to define the set of named constants, i.e., a collection of related values. TypeScript supports both numeric and string-based enums

[@unleashedjanebi]

To my experience, Enums are the perfect balance between having to create an entire class for passing some data in a readable manner, and passing raw data (like numbers) to represent a certain meaning which you have in mind, which makes the code less readable and maintainable That being said, I am a C# developer and just starting out with typescript, but i assume the benefits apply here as well

[@jamesmou9180]

One of the best comprehensive tutorials I have watched in KZbin!

[@The1stKing]

2:07:29 put the cursor on the row you want to duplicate and simply press ALT + SHIFT + ARROW DOWN (Windows users) to make a copy of that row.

[@charliecoppinger]

This is a wicked shortcut, thank you John

[@paulyaokudaya3437]

I was having difficulty grasping the basics from other sites. I am glad to have stumbled upon this. Super progressive explanations

[@jeromemanceau4263]

Thank you so much Hitesh! Amazing tutorial, to the point, as it should be! 👏👏

[@shashanksams]

I've been thinking about learning it since many weeks and you guys released it at the right time 😍

[@francismaina8754]

Just finished the tutorial. Hitesh is a wonderful teacher. I enjoyed from start to finish. I would definitely recommend this tutorial to anyone looking to not only understand Typescript, but also how to read and understand documentations.

[@cybertara]

Po 😊😊😅😊

[@spycake0019]

bro please bring more indian teachers, they are so clear and accurate

[@wovasteengova]

are u tryna be funny?

[@colinmarshall6634]

@@wovasteengova nah they really are the best once you get used to the accent

[@Android-17]

True!

[@sharayus6832]

Finished the whole series. It is really great. Thanks Hitesh!

[@jonnicholson1638]

This was an amazing tutorial - really enjoyed it from start to finish. Thanks Hitesh!

[@christianantony2107]

just finished. good course. he's a great teacher. now im gonna go do a bigger tutorial that uses this stuff.

[@e-genieclimatique]

a project with TypeScript + React + ReduxToolkit that would be a good tutorial

[@martapfahl940]

@@manofsteelind So after this tutorial you say I will not know typescript fully?

[@martapfahl940]

@@manofsteelind You become a typescript expert by writing apps, if I am writing my apps with react, so how should I become expert then?

[@praveshgupta1993]

I was wanting to start learning typescript. Randomly I started today anyway and from google then freecode got over there and started with the course. 1/3rd is done. Great until now and will resume. I noticed that this was uploaded just a day ago so I believe my luck wanted me to wait so that I can learn from you. Thanks

[@stocksandbeyond]

i have completed this series today within 4-5 days and gained lot of knowledge required to get start with typescript thanks hitesh sir for the helpful knowledge it was a great run

[@TenzDelek]

one of the best instructor out there, props to hitesh sir, his js series was exceptionally good

[@user-im5ng9nq9u]

You are an awesome teacher Hitesh Choudhary . Clear communication , well explained. first time looking at your learning series. very well explained on basics concepts . looking forward to learn from your tutorials.

[@bernardobalixa4993]

Really good tutorial. Very precise and educational.

[@haseebsheikh6101]

I recently finished a Typescript course and wanted to thank the instructor for such an informative and helpful tutorial. As a beginner, I was able to easily follow along and understand the concepts thanks to the clear explanations and examples provided. I feel much more confident in my ability to use Typescript in my projects now. Thank you for your hard work and for sharing your knowledge with others!

[@nitilpoddar]

were you able to get some jobe or internship after this?

[@unuefeejovwoke6609]

Did you learn JavaScript first?

[@haseebsheikh6101]

@@nitilpoddar to be honest i haven't applied for any typsecript related job but this video helped m in my current company as our projects are shifting to adonis framework which uses typescript

[@haseebsheikh6101]

@@unuefeejovwoke6609 yes

[@unuefeejovwoke6609]

@@haseebsheikh6101 so can't I learn without knowing much on JavaScript? I'm a python developer and wanna learn typescript

[@pankajthapaliya2336]

Hitesh is real gem. The quality of content is real gold.

[@neetdemon]

I'm glad to say I finally finished this course. Thanks Hitesh :)

[@hawkeyeyt]

Just finished this series. You're a great teacher @hitesh and I'm already your happy subscriber :) Thank you for making this.

[@The1stKing]

1:36:38 yes, we could manipulate with it (do .push() or change the value of certain elements) but we cannot replace that array with another array.

[@rnsanyo]

does "const" have to do with that?

[@The1stKing]

@@rnsanyo I am not sure about the background logic (how TS works behind the curtain) but "readonly property" behaves exactly like a "const" does.

[@datcong464]

In JS, the array type (object type) is the reference type. This means that the variable store the reference (address) of the array or object instead of its value. So when you manipulate an array or object, the variable doesn't change because it always equals the address of the array in memory. Const and "readonly property" only ensure that variables do not change

[@shubham_v]

I think you were going to destroy world

[@beeeeeee42333]

hiyteshy chowdary , ok 😆 , This is what i needed 😊😊

[@ShubhamShubham-gg9fj]

Hitesh Sir on freeCodeCamp rocking 😍😍🔥🔥🔥🔥

[@lord_yzal]

Finally completed the tutorial. Thanks for the informative and awesome content.

[@fadygamilmahrousmasoud5863]

one of the most amazing tutorials about TS, Thank you Hitesh.

[@jack_of_all]

Hitesh is one of my favourite instructors on the internet, it's a great feeling to see him on this channel

[@srivishnu8983]

Great Typescript series, easily learnt a lot from this tutorial. Thank you Hitesh Choudhary

[@gabrielgitonga1252]

I love the content and the delivery process. Made it really simple to understand Typescript.

[@ankan-dev]

Finally such a detailed video on Typescript.

[@TrxsTer]

Completed the entire video and I am very thankful to the instructor for covering the topics with good instructions and examples. Loved it and can't wait to implement typescript on some projects, Cheers 🥂👩‍💻

[@tessabloomx8660]

Finished the course finally. It was a great course Really cool

[@rajithasanjayamal2823]

This is the best video for who are searching to learn Typescript. Hitesh is great teacher.

[@brotto001]

I wasn't even intending to learn this, but i was literally sucked into it! Good flow!

[@restonspositifs3336]

Good tutorial with best quality of song. Congratulations and thank you !

[@anasouardini]

great video as always. the 'in' operator is kind of tricky, I first thought it's equivalent to `hasownproperty` but it turns out that it's not making sure that the property does exist in the actual object and not some inherited prototype. unfortunately they do not mention that in the manual.

[@thedevnoteyt]

And the legend is here guys 🙌. He's one of the best teachers on the internet 🔥. You're going to love this tutorial

[@gopalakrishna9387]

Great Couse!. Much needed one for me in my current new project.

[@aviralpal5088]

Please feature more courses of hitesh sir on this channel ... World needs him

[@thanoz6003]

Thanks for this series, you're an excellent teacher

[@prashantmestry8199]

Your method of teaching is good. Handling and clearing small small concept also. Thank you

[@Galing28]

my timestamps: 2:24:03 (thursday/wednesday) 3:15:25 (friday) 3:19:36 (saturday) 4:07:16 (sunday) FINISHED! (monday) hope you guys can do it too :) good luck!

[@ramanarc]

Hitesh is a great teacher man! Love his calm composure and ability to explain complex concepts simply

[@fbarriosdr]

Thank you so much. This was an amazing course, very useful!!

[@GoutamReddydazz]

I used types script in ionic 3 in 2019 without knowing A-Z depth of type script. It's very beautiful ..

[@uicornerwithJ]

The best tutorial on the subject of typescript! Thank you for the hard work

[@zee_designs]

Insturctions are very clear and to the point. Thank you!

[@wzup23]

Dude! Just finished this. Thanks

[@nirajthakur3794]

1:36:34 -> Yes, we can push values to id if it is an array and if id is read only. enum for enumerate.

[@danneytee]

man, i used to hate ts until i found this lesson. Super helpful!

[@connorskudlarek8598]

For 43:30, keep in mind that there ARE cases where type inference is bad and you'll want to be type explicit. One such case is when the code gets complex enough that to figure out what type it should be requires hunting through multiple files, in this case explicitly typing is a good idea to prevent a change many files away from breaking your code (without throwing error at compilation). There are other cases, too. So it is generally preferred, but not required, to avoid explicit typing. You will usually know when that is the case.

[@mahdirafi6537]

There's no doubt this is the best one . Love from Bangladesh boss

[@hkhsm359]

Very nice tutorial. Amazing and simple explanation. Thanks for sharing your knowledge.

[@user-gu5ts5nx8r]

Your way of teaching sounds tutorial hell safety ! thanks for sharing this great video.

[@bunyameennurudeen173]

Best typescript tutorial with well details explanation. Thanks

[@yizhou2675]

Fantastic tutorial. Thank you Hitesh.

[@heykaali]

Amazing course. I learned Typescript from him.

[@catchrehan]

Perfect tutorial. Thank you so much for such a lovely video.

[@vaishalinaruka8230]

This is an amazing tutorial. If you are a beginner then you can undoubtedly go for this tutoroial.

[@prakashnaikwadi]

One of the best instructor 💯🚀

[@anshumansharma4509]

I was actually looking for a typescript tutorial since 2 days. Started many but then saw your post on Linkedin. I hope it will be a good one. Starting now

[@Sandeep-zd6dq]

When it comes to high quality tutorials, Hitesh is always on top in my list 🔥😎🙌

[@lakshyarajdash]

Hey i know this guy and I follow his channel also. He explains things greatly. Thanks for featuring him in the ts course.

[@noname-qn1lf]

What's his channel?

[@noname-qn1lf]

ok its in description box. Hitesh Chaudhary

[@HiteshChoudharydotcom]

Thanks

[@lakshyarajdash]

@@HiteshChoudharydotcom please make a video on how to make photo album using nextjs and strapi...

[@otabeksodikov2773]

I learned typescript using these series. Thanks very much sir Hitesh

[@pazhaniraj]

Thanks for making this high quality content!

[@singhamita]

Legend is there With amazing content .... His art of teaching is just out of the world ...Thank you freedcodecamp

[@shakilthakur2674]

Enjoyed whole series. amazing teacher

[@holaclaris]

Beautifully explained, Hitesh, thank you so much. As a beginner I find so useful to be able to learn not only theory but also how it actually works in practice and most common mistakes we can make. This was amazing! 👏👏👏👏👏

[@kenhan168]

This is a good lesson. It demystifies the difference between typescript and JavaScript. I am much more confident to learn other web technology after watching this wonderful video.

[@vishalsolanki9234]

Tuples work fine when you set their types as string and number. However, if you try to push a Boolean value into the first index, TypeScript does not allow it. but If you keep the value at the zero index as a string, it is possible to push a number into the tuple.

[@jayyap39]

Completed!! Thanks Hitesh :)

[@harika218]

Typescript types : string, number, boolean, array , null ,undefined , any noImplicitAny, object, union

[@wovasteengova]

and subscribe

[@KresimirKatusic]

Thank you very much for this tutorial with quick and easy type explanations, now many things are much clearer to me

[@rajesho9772]

Amazing learning. Thank u Hitesh ❤

[@shoaibhasan4026]

Chai aur Code ❤ . Exceptional mentor 🙌

[@davinder95]

you are a good human as well thanks for your efforts

[@michaelsaucedo3952]

Just in time with this, thank you very much. We liked it. 🎅

[@kennethsolomon665]

Really glad to see Hitesh here

[@adinaizhamangulova8705]

thank you so much! very precise tutorial and the way you teach is motivating

[@samferrer]

I think there is a point for using Mystring or Myboolean. Mystring could be a string spanning a range of values, ex email or in general reguilar expression. Myboolean could be a boolean that turns the standard notion, it means MyBoolean = not boolean. This notion of boolean could be used to define boolean variables that define the whole environment

[@konstantinreut2577]

Thank you so much! You are doing great job!

[@DanielCodContent]

This is an amazing tutorial , thanks you !!

[@matthewblasco4720]

I finished the whole thing x2 and x1.5 omg

[@lalit1628]

Amazing, best learning stuff from hitesh. Thankyou.

[@onlyenglishtopics2878]

This tutorial was amazing!!. The approach to each topic and the core concepts were very useful, thank you, Hitesh.

[@abhishekdas2512]

Really Proud to have you sir on a Freecodecamp video ♥️♥️🤩👌🏼

[@paconity791]

just what i needed, exactly today!

[@mahmodsamir5110]

Excellent instructor, thank you

[@George-ss8yz]

Thank you so much Mr Hitesh, I love this Tutorial & learned a lot. Wish you luck boss