Learning Programming

🔰 Master Async Iterators

Make your JavaScript apps faster and smarter with async iterators. Stream data efficiently, handle errors gracefully, and keep performance top-notch

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There are a lot of applications that benefit from the screen not locking up automatically. Say, a timer or stopwatch application, a guided meditation app, a live sports score app, navigation app, and much more! For these applications on the web, browsers provide a simple but useful API called the Wake Lock API 🔒 This API, when invoked, prevents the screen from dimming or locking after a timeout period and makes it alive infinitely - till you release the lock. ⚠️ Do note that these API methods may throw errors, which is not captured here.

🔰 JavaScript Array Methods

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A neat shortcut for devs who want their AI to grok a codebase fast.

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Here are the 50 JavaScript interview questions for 2024 1. What is JavaScript? 2. What are the data types in JavaScript? 3. What is the difference between null and undefined? 4. Explain the concept of hoisting in JavaScript. 5. What is a closure in JavaScript? 6. What is the difference between “==” and “===” operators in JavaScript? 7. Explain the concept of prototypal inheritance in JavaScript. 8. What are the different ways to define a function in JavaScript? 9. How does event delegation work in JavaScript? 10. What is the purpose of the “this” keyword in JavaScript? 11. What are the different ways to create objects in JavaScript? 12. Explain the concept of callback functions in JavaScript. 13. What is event bubbling and event capturing in JavaScript? 14. What is the purpose of the “bind” method in JavaScript? 15. Explain the concept of AJAX in JavaScript. 16. What is the “typeof” operator used for? 17. How does JavaScript handle errors and exceptions? 18. Explain the concept of event-driven programming in JavaScript. 19. What is the purpose of the “async” and “await” keywords in JavaScript? 20. What is the difference between a deep copy and a shallow copy in JavaScript? 21. How does JavaScript handle memory management? 22. Explain the concept of event loop in JavaScript. 23. What is the purpose of the “map” method in JavaScript? 24. What is a promise in JavaScript? 25. How do you handle errors in promises? 26. Explain the concept of currying in JavaScript. 27. What is the purpose of the “reduce” method in JavaScript? 28. What is the difference between “null” and “undefined” in JavaScript? 29. What are the different types of loops in JavaScript? 30. What is the difference between “let,” “const,” and “var” in JavaScript? 31. Explain the concept of event propagation in JavaScript. 32. What are the different ways to manipulate the DOM in JavaScript? 33. What is the purpose of the “localStorage” and “sessionStorage” objects? 34. How do you handle asynchronous operations in JavaScript? 35. What is the purpose of the “forEach” method in JavaScript? 36. What are the differences between “let” and “var” in JavaScript? 37. Explain the concept of memoization in JavaScript. 38. What is the purpose of the “splice” method in JavaScript arrays? 39. What is a generator function in JavaScript? 40. How does JavaScript handle variable scoping? 41. What is the purpose of the “split” method in JavaScript? 42. What is the difference between a deep clone and a shallow clone of an object? 43. Explain the concept of the event delegation pattern. 44. What are the differences between JavaScript’s “null” and “undefined”? 45. What is the purpose of the “arguments” object in JavaScript? 46. What are the different ways to define methods in JavaScript objects? 47. Explain the concept of memoization and its benefits. 48. What is the difference between “slice” and “splice” in JavaScript arrays? 49. What is the purpose of the “apply” and “call” methods in JavaScript? 50. Explain the concept of the event loop in JavaScript and how it handles asynchronous operations.

🔅 Learn JavaScript: Write Modern Code with JavaScript ESNext 🌐 Author: Shaun Wassell 🔰 Level: Intermediate ⏰ Duration: 5h 21m

🌀 Master JavaScript with advanced concepts and functions covered in technical interviews.

📗 Topics: JavaScript, Node.js

🔰 JavaScript Array Cheatsheet

Learn more here...

JavaScript console methods are super helpful for troubleshooting and keeping track of what’s happening in our code! 🚀

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🔰 encodeURI and decodeURI in JavaScript

It is important to learn about these functions to ensure URLs are properly formatted for use in HTTP requests. Also for safely transmitting URLs that contain special characters or spaces. and Working with APIs that require encoded URLs for queries. By using encodeURI() and decodeURI(), developers can ensure that their URIs are properly formatted and safely transmitted across different systems and platforms.

🔰 8 Types of JS Functions

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The compute arms race is in full swing — and OpenAI just pulled far ahead.

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📣 Why Sam Altman Says You Shouldn’t Track User Growth Early On In the early stages of a startup, it’s not about how many users you have — it’s about how much they love your product. Altman explains why obsession with absolute growth is a mistake, and what you should focus on instead: 🔸 A small group of obsessed users is better than a wide pool of casual ones 🔸 Deep engagement signals product-market fit more than raw numbers 🔸 Retention and frequency are your best early metrics 🔸 Word-of-mouth is the ultimate validation

Almost all great companies start with a product that a few people love.

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📣 Why Sam Altman Says You Shouldn’t Track User Growth Early On In the early stages of a startup, it’s not about how many users you have — it’s about how much they love your product. Altman explains why obsession with absolute growth is a mistake, and what you should focus on instead: 🔸 A small group of obsessed users is better than a wide pool of casual ones 🔸 Deep engagement signals product-market fit more than raw numbers 🔸 Retention and frequency are your best early metrics 🔸 Word-of-mouth is the ultimate validation

Almost all great companies start with a product that a few people love.

📊 Powered by Crypto Insider

📣 Why Sam Altman Says You Shouldn’t Track User Growth Early On In the early stages of a startup, it’s not about how many users you have — it’s about how much they love your product. Altman explains why obsession with absolute growth is a mistake, and what you should focus on instead: 🔸 A small group of obsessed users is better than a wide pool of casual ones 🔸 Deep engagement signals product-market fit more than raw numbers 🔸 Retention and frequency are your best early metrics 🔸 Word-of-mouth is the ultimate validation

Almost all great companies start with a product that a few people love.

📊 Powered by Crypto Insider