Top 50 Angular Interview Questions

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Top 100 Angular Interview Questions
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00:00:00 - Introduction
00:01:58 - What is Angular?
00:04:50 - What are Angular advantages?
00:07:32 - What is the difference between AngularJS and Angular?
00:10:42 - What is NPM?
00:12:16 - What is CLI tool?
00:13:57 - Section 2
00:14:25 - What are Components in Angular?
00:17:14 - What is a Selector and Template?
00:18:40 - What is Module in Angular? What is app.module.ts file?
00:21:43 - How an Angular App gets Loaded and Started? What are index.html, app-root, selector and main.ts?
00:25:42 - What is a Bootstrapped Module & Bootstrapped Component?
00:27:20 - Section 3
00:27:54 - What is Data Binding in Angular?
00:30:13 - What is String Interpolation in Angular?
00:32:08 - What is Property Binding in Angular?
00:35:06 - What is Event Binding in Angular?
00:38:07 - What is Two way Binding in Angular?
00:41:55 - Section 4
00:42:19 - What are Directives? What are the type of directives?
00:44:49 - What is *ngIf Structural directive?
00:46:43 - What is *ngFor Structural directive?
00:48:06 - What is *ngSwitch Structural directive?
00:50:35 - What is [ngStyle] Attribute directive?
00:53:45 - What is [ngClass] Attribute directive?
00:56:26 - What is the difference between Component, Attribute and Structural Directives?
00:58:08 - Section 5
00:58:29 - What is Decorator?
01:00:15 - What are the types of Decorator?
01:01:05 - What are Pipes? What are the types of Pipes & Parameterized Pipes?
01:03:25 - What is Chaining Pipes?
01:04:14 - Section 6
01:04:38 - Explain Services with Example?
01:06:32 - How to create Servicein Angular?
01:10:04 - How to use Dependency Injector with Services in Angular?
01:11:56 - What is Hierarchical Dependency Injection?
01:14:34 - What is Provider in Angular?
01:15:46 - What is the role of @Injectable Decorator in a Service?
01:19:57 - Section 7
01:20:11 - What are Parent-Child Components?
01:23:40 - What are Lifecycle Hooks in Angular?
01:27:09 - What is a Constructor in Angular?
01:29:24 - What is ngOnInit life cycle hook in Angular?
01:30:52 - What is the difference between constructor and ngOnInit?
01:35:21 - Section 8
01:36:01 - What are Asynchronous operations?
01:38:20 - What is the difference between Promise and Observable?
01:42:47 - What is RxJS?
01:45:21 - What is Observable? How to implement Observable
01:50:10 - What is the role of HttpClient in Angular?
01:51:26 - Section 9
01:51:50 - What is Typescript? Or What is the difference between Typescript and Javascript?
01:57:55 - What is the difference between let and var keyword?
2:00:59 - What is Type annotation?
02:02:27 - What are Built in/ Primitive and User-Defined/ Non-primitive Types in Typescript?
02:04:21 - What is “any” type in Typescript?
02:06:37 - What is Enum type in Typescript?
02:08:48 - What is Type Assertion in Typescript?
02:10:47 - What are Arrow Functions in Typescript?

[@jd-9]

I just faced an interview, the interviewer asked me 15 questions. I gave him 12 correct answers because of your video. +1 Subscribers. I'm not sure if they'll hire me since I was wrong for 3 times. Not just that, I've been away from Angular for like an year and almost forgot all the things, your video refreshed my memory, and brought me back those old memories I've had with Angular. This is the kind of crash course everybody should follow. Seriously, it's like a crash course covering most of the important Angular topics. Thanks, and wish me luck!

[@interviewhappy]

Your welcome JD . Wishing you all luck brother.

[@jd-9]

@@interviewhappy Thanks to you. I got the job. Now, I hope you'll upload more Angular/web development related content.

[@interviewhappy]

@@jd-9 Congrats man, Happy is happy for you :). Enjoy this moment. Best of luck for your future.

[@jd-9]

@@interviewhappy Thanks!

[@vijayalakshmivelluri8781]

hi JD, can you please share all the questions you faced in the interview

[@masterdevops93]

Great professional teacher with interest to transfer knowledge to others without any expectations. Hats off Sir .

[@interviewhappy]

Thanks my friend

[@raytuasmelash5980]

This is the best Angular video I ever came across. Your way of explanation is articulate and precise....Thank you!

[@vibhorekapoor5785]

finally i found a playlist of angular interview questions in a synchronized format and in well explained manner . great going brother.

[@user-jl4zf6bc4d]

the best way of teaching, and the best part is I have set playback speed to 1.75 on youtube and able to grasp things by saving some time!! great job great work well very and clearly defined, unlike 100's of instructors on net who simply runs

[@pranavbhat92]

I have a career gap more than an year. Just watching your videos made me revise the whole of Angular! Thank you for your efforts... 🙏

[@GT-fd8kr]

Every concept is well structured, detailed and explained. Appreciate your efforts. Thank you

[@interviewhappy]

Thanks GT. Wish you all the best for your career.

[@dineshmali5193]

Thanks for this Happy Teaching so that we are getting Happy Learnings.

[@starkboy476]

Thank You So Much Sir!!! Great Video Covering almost interview questions in angular.

[@interviewhappy]

wc and Thanks Stark boy.. Wish you all the best for your career.

[@gourishparagi2240]

Very clean & clear explanation.. Thank you...

[@aargomemnon]

Your explanation is so clear and heart warming. And the examples are so to the point. Great work.

[@interviewhappy]

Glad it was helpful! Gama

[@shemihanpt3371]

Thanks for this wonderful tutorial... It's really helpful 😊😊

[@MuhammatArfin]

please add these ropics as well 1. View encapsulation 2. Jit and Aot compiler 3. Change detection 4. Routing 5. Pure and Impure pipes

[@user-tf8rc7wp9r]

Really helped me a lot. very simplifed way of explanation. love it. Helped a lot

[@dearchan123]

Format is excellent. Explaining with examples along with question and answers is very nice. Thank you.

[@interviewhappy]

Thanks Chan. Wish you all the best.

[@sameerkhurrana5969]

beautifully explained each and every point with proper use case and differentiating with one another in very easy manner. really helpful.. never seen anyone working this much hard to help others. big big thanks

[@interviewhappy]

Thanks Sameer. Your words have that charismatic power. Wish you all the best for your career.

[@shyammyself]

Thank you. It's very much informative

[@arathyunni4964]

Thank you so much for publishing this video. Helped a lot to brush up the basics 😃

[@interviewhappy]

Hi Arathy, Glad it is helpful! Now don't stop here, start giving interviews :)

[@govindbansal2181]

Bestest content 🎉 . Thanks

[@srilaxmipappu5632]

Amazing explanation and I got the angular without actually coding as well. Thank you for doing this video.

[@siddasrikannada]

It helped me a lot while preparing for interview .

[@ReejohnStellas]

Thank u very much for uploading this and for explaining each concepts in detail

[@interviewhappy]

Thanks Reejohn for you words. All the best for your career.

[@sureshkrishnan6949]

super sir , perfect explaination in angular interview questions thank u! so much

[@interviewhappy]

Wc Suresh, wish you all the best for your career.

[@rahamathullahibrahim9303]

Love your hard work man. very well descripted work.

[@interviewhappy]

Thank you so much 😀Ibrahim

[@smilefamilyshorts]

Very well explanatory. Really easy to understand the concepts with the sample examples given through out the session. Thank you very much for your effort and time.🙏🙏

[@interviewhappy]

All thanks to you @ Pravat Kumar Hota . we couldn't have pulled this off without appreciation and wishes .

[@crazynoida]

Awesome Awesome Awesome that all I can say.I have gone through multiple angular tutorails but this was best to understand Angular although its interview questions.Your style is simple and realistic .

[@jayakumar2927]

very useful . keept it more

[@wellingtonrafaelbarrosamor4260]

Well Explainde! Thank you.

[@tuhairweronnie7385]

one of the best explanation i have ever seen, please can you do more vedio like about Ngrx and others

[@prudhvinadh5786]

I had forcefully worked on Angular in my previous projects but to mention in my resume I was not sure how to handle interviews. After I completed this video I have better understanding of co-relating concepts to my work. Thanks a lot for your effort to make these kind of videos

[@interviewhappy]

Angular has good future because it is too good and the companies are not able to find candidates for this.

[@afzalkazmi4456]

Hello Happy! This is best series of interview questions. But while listening to the pipe questions when you added a parameter to pipe, you said it is converted to parameterized constructor. For your reference you can play from here 01:03:10....

[@poojasingh-yl2ch]

Searching teachers like you and finally got it. Sir thank you so much for such a great explanation each and every question were clear please make more video . I request please make full coarse videos for nodejs or angular.

[@interviewhappy]

Thanks Pooja, sure I will try to spread all the knowledge I have. Hope this will help candidates in their career and in their interviews.

[@himachalgroupofmahadeva]

Very nice explanation with sufficient way interesting lectures (101% dediction) thanks you sir hats off to you.

[@user-co8hh6mx5k]

Thankyou so much sir for giving clear explanation of each topic. You help me a lot.

[@interviewhappy]

It's my pleasure Shreya

[@sakthi3152]

Very useful and helpful. Thanks for making this video 🙌♥️

[@interviewhappy]

Glad it was helpful! Sakthi

[@LAUGHTERSumen_007]

You are educating not only freshers but laterals also like me you are awesome and I pray for your good health so that you can keep upload such videos and educate us 🙂

[@interviewhappy]

Thanks Umang, same to you

[@shrikhan2215]

thank you for creating this. helped me a lot 🙏

[@interviewhappy]

Glad it helped! Khan sahab

[@ranjithkumarrepalle4147]

Thank you so much for your videos and these are very helpful to my career and appreciate your smart way presenting

[@interviewhappy]

Your Welcome @ Ranjith kumar .

[@dharmaraosalana641]

Excellent Buddy Great Effort

[@Viku7079]

Ye video aaj v useful hai 👍 mai khud interview de kr dekha hu. Thanks

[@nikhilamrutkar424]

You are providing very good content for the learners Sir. Thank you.

[@interviewhappy]

Thanks and welcome @nikhila

[@deshi6564]

Its a good course to revise your angular concept before Interview . Thank you

[@interviewhappy]

Thanks

[@kamalakara5693]

Superb... I like the way you are explaining in both theoretical and practical.

[@interviewhappy]

Thanks and welcome @kamalakara5693

[@kishorjoshi842]

A big thank you bhayya❣ This is one of the most organized way of providing interview material

[@interviewhappy]

Thanks Kishor. Glad you liked it. All the best for your career.

[@rajkumararora7366]

Thanks Happy for sharing this. I found this this video good one and better than few other options on same topic. Keep the good work !

[@interviewhappy]

Thanks Raj. Wish you all the best for your career.

[@rajkumararora7366]

@@interviewhappy Could u pls append some content on routing and navigation whenever time permits you.

[@user-gd6pe2gi8q]

i like the way u tech,i can understand easily each and every concept u explained sir....Thanku so much sir

[@interviewhappy]

Thanks and all the best for your career.

[@Atharsk77]

Thank You Happy for this awesome and deep explanation.

[@interviewhappy]

Glad it was helpful Athar

[@mdchandana]

Vey Helpfull and Very good your explanation.. Thank you very much..

[@interviewhappy]

Glad it was helpful! Chandana

[@ArunLalKSankar]

Great... Great Video.Thank you 👍

[@interviewhappy]

Thanks Arun

[@shyamaharihar2425]

This video is great and very useful for working professionals to get started with angular ! Thankyou much respected !

[@interviewhappy]

You're very welcome!

[@ReactWithUs2107]

Thank you sir for this beautiful interview question answer video.

[@interviewhappy]

Welcome Shubham

[@user-uo1xl8rg6r]

this was great thank you

[@prak3569]

Excellent video , one stop solution for angular interview to prepare quickly.

[@sandhyabhovi477]

Thank you for making this video. Helped me a lot

[@interviewhappy]

wc Sandhya

[@ashok_kumar890]

waw ...what a explation ..thank you so much sir.. i alredy cover C# intervew qustion ..thanks a lot

[@interviewhappy]

You are most welcome

[@KistaiahGoute]

Awesome ..Tutorial.. Thank U sir

[@interviewhappy]

You are most welcome Kistaiah

[@Mansisawant7]

Thank you sir for All these questions I'm really appreciated👍🏻👍🏻

[@interviewhappy]

Always welcome @Mansi

[@santoshlokhande7038]

I am Happy today after watching the video. Thank you. 😊

[@interviewhappy]

I am also Happy :) . All the best for your career.

[@karthi5089]

hi , I just came to know string interpolation only for string , but if u want number to display we have to use "{{ variable }}" . Thank you

[@interviewhappy]

You are right Karthi. Keep on learning. All the best.

[@reshmaofficial9994]

My real teacher..... You are very big legend....

[@interviewhappy]

Thank you so much for your kind words . I am very grateful @reshmaofficial9994

[@nivedyan3961]

Thank you for your vdo sir, it helped me a lot to know abt angular.. ❣️

[@interviewhappy]

You are most welcome @ Nivedya

[@vishnuchaitanya8682]

Very good explanation, i can able to understand easily, all the topics, with this video, Thank You Sir

[@interviewhappy]

Glad to hear that Vishnu

[@mahendraui]

Very good explanation this type genuine videos I have never seen

[@interviewhappy]

Glad you liked it. Thanks Mahendra

[@maheshkotakonda4256]

Very very nice course to learn angular

[@sunilshinde9897]

You are Gurudev for learners.Thank you. 🙏

[@interviewhappy]

Thanks and welcome @ Sunil

[@NikaKiltava-zd4iq]

I have an intern interview in 6 hours. This course is really helpful

[@sureshk3024]

Thank you , Its really Helps us to improve

[@interviewhappy]

Glad to hear that @ Suresh

[@user-or9jt6wy7d]

great explanations.thank you very much.highly recommend for others who would like to crack angular interview.

[@interviewhappy]

Many thanks! @user

[@chathuraprabashwara7475]

clear explanation of each and every area. highly recommend this course♥♥♥

[@interviewhappy]

Glad you think so! Thanks a lot Chathura Prabashwara

[@raghve4543]

Very Awesome Video ..Clear Explanation with Practical Examples..Please Create More Videos On Angular Advance Topics ..I will be Happy..As Your Name is Happy ❤

[@interviewhappy]

Thanks man :). I wish you all the best for your career.

[@ashwinkumar504]

Awesome , the video is very helpful, Thank you very much.

[@interviewhappy]

Glad it was helpful!

[@rajithaadihetty7032]

Very helpful video. If can, add a video for angular forms and state management(NgRX) also

[@car_holic1995]

aapka dil se dhnywaad bhai..

[@interviewhappy]

Thanks @waytolivelife

[@MudassirKhan-ko8po]

Amazing explanation loved it

[@interviewhappy]

Glad you liked it. Mudassir

[@MrDragos696]

Thank you for sharing this!

[@interviewhappy]

Thanks. Glad you liked it. All the best for your career.

[@srinivasankharpayya671]

Thank you Sir, your video really help for preparing interview please continue making more videos

[@interviewhappy]

I will try my best

[@aditijain70]

Great Explanation! I gave an interview just a few days back and all the questions were explained here except for one or two. Thank you!

[@interviewhappy]

Glad it was helpful! Aditi All the very best .

[@sinnner6]

This is awesome!!! please make a similar one for react

[@interviewhappy]

Thanks. Sure soon I will.

[@milesteghades]

This was an extremely well done course. Thank you .

[@interviewhappy]

Glad it was helpful @ milesteghades

[@devendratiwari8139]

00:30:50 String Interpolation works with any data type not only string ... If I m wrong please correct me.

[@KavyaMurugan94]

Thank you somuch this is very useful and informative session... 😊

[@interviewhappy]

Most welcome 😊@kavya

[@TheRiderzx6r]

Liked, subscribed !

[@ankitakolhe9142]

Very nice video. It covered all topic.

[@interviewhappy]

Thanks @ Ankita

[@akankshapandey1012]

Ver nice explanation.

[@mani90s]

very great explanations! can you pls add nodejs also in your teachings

[@mohamednabil4291]

thank you for this vedio Really I appreciate your effort

[@interviewhappy]

Thanks brother for appreciating @mohamednabil4291

[@jawadbaig406]

Best video learned alot

[@interviewhappy]

Thanks for appreciating @jawadbaig406

[@Nagarani0429]

This channel is very informative

[@interviewhappy]

Glad you think so!@ RaniMnr

[@rp03254847]

Thanks heaps for the tutorial. I cleared my interview

[@interviewhappy]

Glad it helped!

[@manjushagangadharan7378]

Many, thanks for the video sir. I can able to learn angular with this

[@interviewhappy]

Happy to help

[@MrHimanshuji1729]

thank you for detailed video

[@interviewhappy]

You are welcome Himanshu

[@salmacharef3815]

just wonderful😍😍

[@interviewhappy]

Thanks a lot 😊Salma

[@RupeshYadavLive]

You are providing very good content for the learners Sir. God bless you Thank you .

[@interviewhappy]

Thanks and welcome

[@gautampatel1150]

mind blowing explaintation

[@interviewhappy]

Thank you so much 😀@gautampatel1150

[@gulabchandgupta5486]

Very helpful tysm 🥳🥰love from jamshedpur..

[@interviewhappy]

Thanks Gulabchand. Love from Uttarakhand.

[@akshayasharmidevi2567]

thankyou sir❤

[@amoltiwari8371]

Thanks a lot Happy Sir 😊😊

[@interviewhappy]

Most welcome @amoltiwari8371

[@jasmeen3014]

Very helpful.. can you please make video for 2 years experience person

[@aniketsapate]

@Inject module and adding dependancy as a provider in component, both of the things make the same meaning?

[@TheSumit22]

you deserve way more audience and subs