EP-01 | How JavaScript Works 🔥& Execution Context

🧠 What Is Execution Context? (Simple Words) Think of the execution context like a classroom where JavaScript works. There is a whiteboard where all important notes (variables & functions) are written → Memory Component There is a teacher who reads and executes each instruction one-by-one → Thread of Execution 📌 1. Memory Component (Variable Environment)
🧠 Simple Meaning: A place where JavaScript stores data before running the code. 🎒 Real-Life Example: Imagine you enter a classroom and the teacher writes names on the board: greet = function(){...} The whiteboard is the memory component, storing data before the lesson starts. 📌 2. Code Component (Thread of Execution)
🧠 Simple Meaning: The part where JavaScript executes code line by line, like a teacher reading instructions one after another. 🎒 Real-Life Example: After writing on the whiteboard (memory),
the teacher starts reading the notebook: Say hello to the students Move to next instruction The teacher cannot read two lines at the same time. That is the thread of execution. 📌 3. JavaScript Is Synchronous & Single-Threaded
🧠 Simple Meaning: JavaScript does ONE thing at a time and in order. 🎒 Real-Life Example: Imagine a student reading a book aloud. They must finish one sentence before starting the next. They cannot read two sentences at the same time. That’s how JavaScript works—step-by-step, one-by-one. 💡 Full Real-Life Example Putting It All Together
`Code:
var name = "Sara";
function sayHi() { console.log("Hi " + name);
} 🧠 Real-Life Breakdown: Memory Component (Whiteboard) Thread of Execution (Teacher reading steps) Executes it → prints "Hi Sara" JavaScript finishes this before moving to the next line. Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well For further actions, you may consider blocking this person and/or reporting abuse