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Knowing React won't make you a great web developer.

Knowing Javascript fundamentals will.

7 concepts simplified with visuals:


𝟬. 𝗧𝗵𝗲 𝗘𝘃𝗲𝗻𝘁 𝗟𝗼𝗼𝗽:💡

The event loop is a mechanism that allows JavaScript to perform non-blocking operations, with smooth functionality and UX by handling asynchronous callbacks.

➡️ It's important as it enables efficient execution of tasks in a single-threaded env.


𝟭. 𝗛𝗼𝗶𝘀𝘁𝗶𝗻𝗴:💡

Hoisting is JavaScript's default behavior of moving declarations to the top of their scope before code execution.

➡️ Understanding it will help you avoid reference errors and write predictable code.


𝟮. 𝗦𝗰𝗼𝗽𝗲 (𝗖𝗵𝗮𝗶𝗻):💡

The scope in JavaScript defines where variables and functions are accessible.

➡️ The scope chain ensures that code in one scope can access variables from higher scopes but not vice versa, which is important for managing naming collisions.


𝟯. 𝗧𝗵𝗲 𝗝𝗮𝘃𝗮𝘀𝗰𝗿𝗶𝗽𝘁 𝗘𝗻𝗴𝗶𝗻𝗲:💡

The JavaScript engine is the interpreter that converts your JavaScript code into machine code.

➡️ Its efficiency directly impacts the performance of your application: understanding how it works = knowing how to optimize your code.


𝟰. 𝗣𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗮𝗹 𝗜𝗻𝗵𝗲𝗿𝗶𝘁𝗮𝗻𝗰𝗲:💡

Prototypal Inheritance is a feature in JavaScript where objects inherit properties from other objects.

➡️ It's fundamental for creating complex object hierarchies and sharing functionality, allowing to reuse code more easily.


𝟱. 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗼𝗿𝘀 𝗮𝗻𝗱 𝗜𝘁𝗲𝗿𝗮𝘁𝗼𝗿𝘀:💡

Generators and iterators are features that allow you to define custom iteration behavior.

➡️ They are important for handling sequential operations, enabling you to work with potentially infinite data streams efficiently.


𝟲. 𝗣𝗿𝗼𝗺𝗶𝘀𝗲𝘀 & 𝗔𝘀𝘆𝗻𝗰/𝗔𝘄𝗮𝗶𝘁:💡

Promises and async/await are constructs that simplify working with asynchronous operations.

➡️ They are used for writing clean, readable code when dealing with callbacks, such as in-network requests or file operations.

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DB Interview questions

Position - Associate Developer
Package - 26LPA

1st Round 🔥
1. What are the new features introduced in Java 8.
https://www.baeldung.com/java-8-new-features

2. Sort a student class list based on the student age in descending order.
https://www.educative.io/answers/how-to-sort-a-list-of-user-defined-objects-in-java

3. Write a logic to detect a loop in linked list and remove the loop
https://www.google.com/amp/s/www.geeksforgeeks.org/detect-loop-in-a-linked-list/amp/

4. Design HashMap put method.
https://www.turing.com/kb/implementing-hashmap-in-java

5. How to divide a monolithic application to Microservice
https://martinfowler.com/articles/break-monolith-into-microservices.html

6. Why String is immutable
https://www.google.com/amp/s/www.geeksforgeeks.org/java-string-is-immutable-what-exactly-is-the-meaning/amp/

7. How Redis Works and what are the different caching strategies.
https://codedamn.com/news/backend/advanced-redis-caching-techniques

8. How to add a list in redis cache and how to access the data again
https://redis.io/glossary/lists-in-redis/

9. What are the design pattern spring boots internally use
https://www.baeldung.com/spring-framework-design-patterns

10. How spring Auto configuration features works
https://www.marcobehler.com/guides/spring-boot-autoconfiguration

11. How to enable hibernate caching
https://www.baeldung.com/hibernate-second-level-cache

12. Lazy loading vs Eager Loading
https://www.imperva.com/learn/performance/lazy-loading/

13. Asked me to improve one SQL query
https://developernation.net/blog/12-ways-to-optimize-sql-queries-in-database-management/



2nd Round 🔥
1. Implements a search engine, something like Google. Low Level Coding
https://medium.com/@maxi.gkd/building-a-search-engine-using-a-trie-data-structure-cb79475d8a3d

2. How Pulisher Subscribe modal works
https://www.geeksforgeeks.org/what-is-pub-sub/

3. How to restrict an API call to be called from users who have required roles and permission
https://www.baeldung.com/role-and-privilege-for-spring-security-registration

4. Request Scope in spring boot
https://www.baeldung.com/spring-bean-scopes#:~:text=The%20request%20scope%20creates%20a,for%20a%20particular%20WebSocket%20session.
5. How to exclude a dependency
https://www.baeldung.com/mvn-plugin-dependency-exclusion

6. How to pass JWT token in rest api call
https://www.toptal.com/spring/spring-security-tutorial

7. logic to execute a method after every one hour without using Cron job
https://stackoverflow.com/questions/10748212/how-to-call-function-every-hour-also-how-can-i-loop-this#:~:text=Create%20a%20Timer%20object%20and,timer.

while(1==1) {
//Your code here
try{
Thread.sleep(3600000);
}
catch (Exception e) {}
}

8. Difference between scheduled and cached thread pool
https://www.linkedin.com/pulse/types-thread-pool-executors-aniket-nandan?utm_source=share&utm_medium=member_android&utm_campaign=share_via
______________________
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Top 10 Github Repositories For Web Developer

1. Web Developer-Roadmap :  https://github.com/kamranahmedse/developer-roadmap

2. 30-Seconds-Of-Code :  https://github.com/30-seconds/30-seconds-of-code

3. Awesome-Cheatsheets :  https://github.com/LeCoupa/awesome-cheatsheets

4. CSS-Protips :  https://github.com/AllThingsSmitty/css-protips

5. 33-JS-Concepts :  https://github.com/leonardomso/33-js-concepts

6. You-Dont-Know-JS :  https://github.com/getify/You-Dont-Know-JS/tree/2nd-ed

7. Front-End-Checklist :  https://github.com/thedaviddias/Front-End-Checklist

8. Javascript-Questions :  https://github.com/lydiahallie/javascript-questions

9. Clean-Code-Javascript :  https://github.com/ryanmcdermott/clean-code-javascript

10. free-programming-books : https://github.com/EbookFoundation/free-programming-books
__

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🌟 𝗜𝗻𝘁𝗿𝗼𝗱𝘂𝗰𝗶𝗻𝗴 𝟰𝟳 𝗖𝗮𝗿𝗲𝗳𝘂𝗹𝗹𝘆 𝗖𝘂𝗿𝗮𝘁𝗲𝗱 𝗖𝗵𝗲𝗮𝘁𝘀𝗵𝗲𝗲𝘁𝘀 𝗬𝗼𝘂'𝗹𝗹 𝗘𝘃𝗲𝗿 𝗡𝗲𝗲𝗱! 📚

1. Python : https://lnkd.in/grD8XUS6
2. Pandas : https://lnkd.in/g4yTJ7CP
3. NumPy : https://lnkd.in/gg9Uw-km
4. Matplotlib https://lnkd.in/gahrGicD
5. Seaborn https://lnkd.in/gcu4UKpw
6. Scikit-learn https://lnkd.in/gGfkNu5i
7. TensorFlow : https://lnkd.in/g3fw3uRV
8. Keras : https://lnkd.in/gfPTfbgg
9. PyTorch https://bit.ly/3lnsiIz
10. SQL : https://lnkd.in/gnwe4qcb
11. R : https://lnkd.in/gEgJ6A8j
12. Git : https://lnkd.in/gyzhztvH
13. AWS https://bit.ly/3ZQWMS1
14. Azure https://bit.ly/42f4N4V
15. Google Cloud Platform : https://bit.ly/3JJADzv
16. Docker : https://bit.ly/3Lt2zJe
17. Kubernetes https://lnkd.in/gjXCT7Mb
18. Linux Command Line : https://bit.ly/3FtcTgw
19. Jupyter Notebook https://lnkd.in/g7cPmgHQ
20. Data Wrangling :https://bit.ly/3TiMibP
21. Data Visualization : https://lnkd.in/gQ52Jd_J
22. Statistical Inference https://lnkd.in/grNXVQh5
23. Probability : https://lnkd.in/gvnWCphc
24. Linear Algebra : https://lnkd.in/gty6XpVF
25. Calculus https://lnkd.in/gjhsmsxu
26. Time Series : https://bit.ly/3Fvuep4
27. NLP: https://bit.ly/3Fvursm
28. Neural Network : https://lnkd.in/gThs2AAp
29. Deep Learning : https://lnkd.in/gVbSPae2
30. Machine Learning : https://bit.ly/3mZ5Wh3
31. Apache Spark : https://lnkd.in/ge7Rj-Yr
32. Hadoop : https://bit.ly/3Lq34DR
33. Big-O Notation t: https://lnkd.in/gfYqM8WU
34. Regular Expression : https://lnkd.in/gE9kZTZW
35. Unix/Linux Permissions https://bit.ly/3ZUfwA8
36. Python String Formatting https://lnkd.in/gHi26Uk2
37. Flask : https://lnkd.in/gGzbSTgU
38. Django : https://lnkd.in/grZcWz8y
39. SQL : https://lnkd.in/gyierV3f
40. PostgreSQL : https://lnkd.in/gzfiW7zB
41. MySQL: https://lnkd.in/g4JnPVTe
42. MongoDB : https://lnkd.in/gHc4F4ER
43. TensorFlow Probability Cheat Sheet: https://lnkd.in/gr3bgDGP
44. OpenAI GPT-3 Documentation: https://lnkd.in/gawB_SC9
45. GPT-3 API Reference: https://lnkd.in/gtCGZvX8
46. GPT-3 GitHub Repository: https://lnkd.in/g56cQQPD
47. Chat GPT Cheat Sheet : https://lnkd.in/e43cDB9q
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100 of the best Google Chrome extensions in 2024

(Bookmark for instant access)

Productivity:
1. Google Docs Offline
2. Google Mail Checker
3. Zoom Scheduler
4. Toggl Button: Productivity & Time Tracker
5. Kami Extension – PDF and Document Annotation
6. Loom
7. LastPass
8. Everhour
9. Awesome Screenshot
10. Checker Plus for Gmail
11. StayFocusd
12. HubSpot Sales
13. Todoist
14. Reply
15. ClickUp
16. Chatsonic
17. Extensions Manager
18. Grammarly
19. Print Friendly & PDF
20. Email Finder
21. Speedtest by Ookla
22. Hola Free VPN

Security:
1. Click&Clean
2. J2Team Security
3. Ghostery
4. Checkbot
5. Avast Online Security
6. FlowCrypt
7. Fair

AdBlocker:
1. Ad blocking
2. uBlock Origin
3. AdBlock Plus
4. Ghostery
5. Pop-up Blocker Pro
6. AdBlocker Ultimate

Privacy:
1. DuckDuckGo Privacy Essentials
2. Disconnect
3. Privacy Badger
4. Ghostery
5. HTTPS Everywhere
6. Cookie AutoDelete

Social Media:
1. Facebook Purifier
2. Twitter Blue Web Extension
3. Instagram Web Viewer
4. Reddit Enhancement Suite
5. LinkedIn Sales Navigator Extension

Shopping:
1. Honey
2. Rakuten Cash Back
3. Amazon Assistant
4. PriceBlink
5. The Camelizer

Other:
1. Dark Reader
2. Pocket
3. Evernote Web Clipper
4. OneTab
5. Google Translate
6. Bitwarden
7. Save to Google Drive
8. Google Scholar Button
9. Awesome AutoRefresh+
10. Web Developer Toolbar
11. Google Input Tools

This is just a small sample of the many great Google Chrome extensions available. You can find more extensions by browsing the Chrome Web Store.
___
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