Skill Topic · Cinematic

📘 JS RegExp — Regular Expressions Ka Jaadu

Regular Expressions (RegExp) = text search aur pattern matching ka sabse powerful tool! Bilkul…

Overview

📘 JS RegExp — Regular Expressions Ka Jaadu — Quick Facts

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Security Scanner 🔍: JavaScript RegExp 🛡️

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Scanner settings: /pattern/flags

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Quick beep (hai/nahi): test() → true/false

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Full report: match() → array

Topic 1

🎯 Real-World Analogy: Metal Detector & Security Scanner 🔍🛡️

📚 Socho ek Airport Security Scanner hai jo specific items detect karta hai. RegExp =…

Topic 2

📌 RegExp Kya Hai? — Scanner Kya Hai? 🔍

💡 💡 Key Insight: Regular Expression = ek pattern jo text me search/match karta hai. Pattern…

Topic 3

📌 RegExp Banane Ke 2 Tareeqe — Scanner Setup! 🔧

🎯 `javascript // 1️⃣ Literal syntax (recommended — fixed pattern): let regex1 = /hello/gi;…

Topic 4

📌 Flags (Modes) — Scanner Modes! 🔧

⭐ 💡 Analogy: Flags = scanner ka mode. g = poora body scan, i = case ignore, m =…

Topic 5

📌 String Methods with RegExp — Scanner Operations! 🛡️

🔑 `javascript let text = "The rain in Spain stays mainly in the plain"; // 1️⃣ search() —…

Topic 6

📌 RegExp Methods — Scanner Functions! 🔍

✨ `javascript let regex = /hello/i; let text = "Hello World! Hello JS!"; // 1️⃣ test() —…

Topic 7

📌 Character Classes — Scanner Types! 🔤🔢

🌟 💡 Analogy: Character classes = different scanner types. \d = number scanner, \w = letter…

Topic 8

📌 Brackets — Range Scanner! 📏

🚀 `javascript // 🎯 [abc] — a, b, ya c me se koi: console.log("cat bat…

Topic 9

📌 Quantifiers — Kitne Match? 📊

📚 💡 Analogy: Quantifiers = scanner ko batao kitne items dhoondne hain — exact 3? Ya jitne…

Topic 10

📌 Anchors & Boundaries — Scanner Position! 📍

💡 `javascript // ^ = start of string/line: console.log(/^Hello/.test("Hello World")); //…

Topic 11

📌 Groups & Capture — Items Bag Me Daalo! 🎒

🎯 💡 Analogy: Capture groups = scanner se items nikal ke alag-alag bags me sort karo!…

Topic 12

📌 Lookahead & Lookbehind — Aage Peeche Dekho! 👀

⭐ 💡 Analogy: Lookahead = scanner aage dekh ke decide karta hai match karna ya nahi.…

Topic 13

📌 Common Real-World Patterns — Practical Scans! 🌐

🔑 `javascript // 📧 Email validation: let emailRegex =…

Topic 14

📌 Greedy vs Lazy — Kitna Scan? 🤤😌

✨ 💡 Analogy: Greedy = scanner jitna zyada scan kar sake karta hai (bhooka 🤤). Lazy = jitna…

Topic 15

⚠️ Common Mistakes & Solutions — Scanner Galtiyan! 🔍❌

🌟 | # | ❌ Galat Tareeqa | ✅ Sahi Tareeqa | Kyun? 💡 | |---|---|---|---| | 1 | /hello/ me g…

Topic 16

🧪 Practice Exercises — Scanner Training! 🔍

🚀 Exercise 1: Beginner 🟢 Phone Number Extractor: Ek function banaao jo text me se sab phone…

Topic 17

📝 Summary Table — Quick Revision 🔍

📚 | Concept | Key Point | |---|---| | /pattern/flags | RegExp literal syntax 🔍 | | g, i, m…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

📘 JS RegExp — Regular Expressions Ka Jaadu ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 JS RegExp — Regular Expressions Ka Jaadu ka 'Scanner settings' kya hai?

Complete! 🎉

📘 JS RegExp — Regular Expressions Ka Jaadu Complete!

Aliens School · HIEN · Cinematic Knowledge

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