Day 25 of learning MERN Stack

Hello Dev Community! 👋

It is officially Day 25 of my journey to master the MERN stack! After the excitement of building a Tic-Tac-Toe game yesterday, today I returned to the Apna College curriculum with Shradha Didi to tackle a heavy engineering concept: Object-Oriented Programming (OOP) Fundamentals in JavaScript.

Specifically, today was all about looking under the hood to see how JavaScript objects share properties using Prototypes.

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🧠 Key Learnings From JS Lecture 9 (Part 1)

JavaScript objects are powerful, but understanding how they inherit features changes how you structure programs. Here is what I cracked today:

1. The Power of the this Keyword

I learned that inside an object method, this refers to that specific object itself. It allows functions inside an object to access its own properties dynamically:

javascript
const student = {
    name: "Ali Hamza",
    marks: 95,
    printMarks: function() {
        console.log("Marks =", this.marks); // 'this' means student
    }
};