Skill Topic · Cinematic

🎯 Topic 09: Events — "User Ki Har Harkat Pakdo!"

"Events are actions or occurrences that happen in the browser — things the user does, or things the…

Overview

🎯 Topic 09: Events — "User Ki Har Harkat Pakdo!" — Quick Facts

📌

Previous: Index

🎯

[← Topic 08: DOM Manipulation](./08_JS_DOM.md): 📚 Course Index

Topic 1

📌 Is Topic Me Kya Hai?

📚 Event types (mouse, keyboard, form, window), addEventListener, event object, event…

Topic 2

🎧 addEventListener — Events Suno!

💡 `javascript // SYNTAX: element.addEventListener(eventType, handlerFunction); let btn =…

Topic 3

🖱️ Mouse Events!

🎯 `javascript let box = document.querySelector("#box"); // CLICK — Single click!…

Topic 4

⌨️ Keyboard Events!

⭐ `javascript // KEYDOWN — Key press! (MOST USED!) document.addEventListener("keydown", (e)…

Topic 5

📝 Form Events!

🔑 `javascript // SUBMIT — Form submit! let form = document.querySelector("#myForm");…

Topic 6

🪟 Window & Document Events!

✨ `javascript // LOAD — Page FULLY loaded (images, CSS, sab!)…

Topic 7

📦 Event Object — Sab Details!

🌟 `javascript // Har event handler ko EVENT OBJECT milta hai! // Isme event ki SAARI…

Topic 8

🫧 Event Bubbling & Capturing!

🚀 `javascript // BUBBLING — Event NEECHE se UPAR jata hai! // Click on <p> → <div> → <body>…

Topic 9

🎯 Event Delegation — Smart Pattern!

📚 `javascript // Problem: 100 buttons pe click listener lagana = 100 listeners! 🐌 //…

Topic 10

🛑 preventDefault — Default Action Block!

💡 `javascript // FORM submit (page reload block!):…

Topic 11

⏱️ Debounce & Throttle — Performance!

🎯 `javascript // PROBLEM: Some events fire VERY frequently! // scroll: 100+ times per…

Topic 12

🔑 KEY POINTS — Top 10 Takeaways!

⭐ ` ┌─────────────────────────────────────────────────────────┐ │ │ │ 🔑 KEY POINTS │ │ │ │…

Topic 13

💪 Exercises — Khud Karo, Khud Seekho!

🔑 Exercise 1: Interactive Button 🔴🟢 `javascript // Button banao jo: // 1. Click → color…

Topic 14

🗺️ Navigation

✨ | Previous | Index | Next | |----------|-------|------| | ← Topic 08: DOM Manipulation |…

Quick Quiz

Quiz — Question 1

🎯 Topic 09: Events — "User Ki Har Harkat Pakdo!" ka sabse sahi definition kya hai?

Complete! 🎉

🎯 Topic 09: Events — "User Ki Har Harkat Pakdo!" Complete!

Aliens School · HIEN · Cinematic Knowledge

✅