Update JavaScript Array Objects with Map Method

Objects in JavaScript | Simple Real Life Examples Full video link 👇🏻👇🏻👇🏻👇🏻 https://lnkd.in/gkSUw7y3 In this video, we will learn about Objects in JavaScript including what an object is, how it works, and where it is used. Objects are one of the most important concepts in JavaScript and are widely used in real-world applications. In this tutorial, you will learn: - What is an Object in JavaScript V How to create objects - Accessing object properties - Adding & updating values - Real-life examples (user, cart, API data) Full video link 👇🏻👇🏻👇🏻👇🏻 https://lnkd.in/gkSUw7y3

Arrays in JavaScript | Basics & Methods List | What is Array in JavaScript Full video link 🔗 👇🏻👇🏻👇🏻 https://lnkd.in/gnp6Q4Hc In this video, we will learn about Arrays in JavaScript including what an array is, how it works, and where it is used. This is a beginner-friendly introduction where we will also explore the names of important array methods (detailed explanation in the next video). In this tutorial, you will learn: - What is an Array in JavaScript - How Arrays work - Indexing in Arrays Real-life use cases - Important Array Methods (Overview) Full video link 🔗 👇🏻👇🏻👇🏻 https://lnkd.in/gnp6Q4Hc

I try to create a list with a hidden 2nd level with javascript. The most confusing part that I come across is to learn how to use the if conditional block to reset the index page to 0 in order to make the list hide again.

🚀 Day 67 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects 💻 🔹 What I Worked On: • Iterated through array of objects using for loop • Printed all elements and accessed object properties like loc • Used loop with step increment (i += 2) to print alternate values • Practiced reverse counting using for and while loops • Used forEach() for cleaner array iteration 💡 Key Learning: • Arrays of objects are very common in real-world applications • Loop conditions must be handled carefully (i < length vs <= length) • forEach() is simple and readable for iteration • Multiple ways to loop → choose based on requirement 🔥 Takeaway: 👉 Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step 🚀 #Day67 #JavaScript #Loops #ArrayIteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir

🚀 Day 17/30 – slice() vs splice() in JavaScript These two methods look similar but behave very differently 👇 🔹 slice() Returns a new array Does NOT modify original array Used to extract elements 🔹 splice() Modifies the original array Can add/remove elements Used for updating the array 💡 In simple terms: 👉 slice = copy 👉 splice = change learn with w3schools.com #Day17 #FrontendDeveloper #JavaScript #InterviewPreparation #WebDevelopment #30DaysChallenge JavaScript Mastery

Day 2/100 of JavaScript 🚀 Today’s Topic: "let", "const", "var", hoisting and TDZ. "var", "let", and "const" are used to declare variables, but they differ in scope and initialization behavior - "var" is function-scoped and during the creation phase it gets initialized with "undefined", so it can be accessed before assignment. - "let" and "const" are block-scoped and are registered in memory during creation, but not initialized immediately. This leads to TDZ (Temporal Dead Zone) a phase where the variable exists in memory but remains uninitialized and cannot be accessed. Accessing "let" or "const" variables before initialization results in a ReferenceError. - "const" must be initialized at declaration and cannot be reassigned. - "let" allows reassignment but not redeclaration in the same scope. These differences make "let" and "const" more predictable and safer compared to "var". #Day2 #JavaScript #100DaysOfCode

Already know how queues work? Made a visual to understand FIFO, Big O trade-offs, and when to use queues in JavaScript — all in one diagram. #JavaScript #DataStructures #Algorithms #SoftwareEngineering

Strings in JavaScript | Basics, Uses & Methods Overview Link full video 👇🏻👇🏻👇🏻 https://lnkd.in/gQMVQWEm In this video, we will learn about Strings in JavaScript including what a string is, how it works, and where it is used. This is a beginner-friendly introduction where we will also explore the names of important string methods (detailed explanation in the next video). In this tutorial, you will learn: - What is a String in JavaScript V How Strings work. - Where Strings are used in real life - Important String Methods (Overview) Like | Comment | Subscribe for more JavaScript tutorials #JavaScript #Strings #JavaScriptTutorial #Programming Link full video 👇🏻👇🏻👇🏻 https://lnkd.in/gQMVQWEm

🚀 Day 1/30 – JavaScript Challenge LeetCode 2667 – Create Hello World Function 🧩 Problem: Write a function that returns a new function. That new function should always return "Hello World", no matter what arguments are passed. 🧠 Explanation: createHelloWorld() returns another function. The returned function uses (...args) to accept any number of arguments. But we ignore all inputs and always return "Hello World". 💡 Key Concept: This problem is based on: Higher Order Functions (function returning function). Rest Parameters (...args). Function independence from input. #javascript #30Days #Leetcode

JavaScript becomes a different language the moment you realize this: 👉 Functions are not just reusable blocks… they are values. And once you understand that, concepts like callbacks and higher-order functions stop feeling confusing and start feeling natural. In this video, I’ve broken it down step by step: How values behave in JavaScript How objects behave Why functions behave the same way (and why that matters) From there, everything builds logically: ✔ Passing functions as arguments ✔ Returning functions from functions ✔ What exactly a callback is ✔ What a higher-order function is ✔ How this leads to more flexible and reusable code No jargon. No unnecessary complexity. Just a clear, practical approach to a core JavaScript concept. 🎥 Watch here: https://lnkd.in/gM8ibZ6M This is Part 1 — next, we’ll explore how this shows up in real code with: setTimeout, forEach, map, filter #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #LearnToCode #JavaScriptDeveloper #SoftwareDevelopment #Developers #CodingJourney #TechEducation #Hosiyar #JS