Skill Topic · Cinematic

📘 Angular — Directives

Directives Angular ke wo tools hain jo DOM ko dynamically control karte hain — elements…

Overview

📘 Angular — Directives — Quick Facts

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Type: Prefix

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Component: (none)

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Structural: * ya @

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Attribute: [ ]

Topic 1

📌 1. Directive Kya Hai?

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🔴 Red Light = "Ruko!" → Element…

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🟢 Green Light = "Chalo!" → Element…

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🟡 Yellow Light = "Dhheere!" →…

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🔄 Roundabout = "Loop me chalo!" →…

Topic 2

📌 2. *ngIf — Conditional Rendering (Show/Hide)

💡 Kya Hai? *ngIf = Condition true ho to element dikhao, false ho to DOM se completely…

Topic 3

📌 3. *ngFor — List Rendering (Loop)

🎯 Kya Hai? *ngFor = Array/List me loop karo aur har item ke liye ek element banao. 💡…

Topic 4

📌 4. *ngSwitch — Multiple Conditions

⭐ Kya Hai? *ngSwitch = Ek variable ki value ke hisaab se alag-alag content dikhao — jaise…

Topic 5

📌 5. Angular 17+ — Modern Control Flow (@if, @for, @switch)

🔑 Kyun Naya Syntax Aaya? | Old Syntax (< Angular 17) | Problem |…

Topic 6

📌 6. ng-container & ng-template

✨ ng-container — Invisible Wrapper `html <!-- ❌ Problem: Agar wrapper div nahi chahiye…

Topic 7

📌 7. Custom Attribute Directive

🌟 Kya Hai? Custom directive = Apna khud ka directive banao jo kisi bhi element pe lag sake…

Topic 8

📌 8. Custom Structural Directive

🚀 Example: appUnless — Opposite of ngIf `typescript // ═══ unless.directive.ts ═══ import {…

Topic 9

📌 9. Complete Comparison Table

Topic 10

📌 10. Common Mistakes — Beginners Ye Galtiyan Karte Hain

💡 | # | ❌ Galti | ✅ Solution | |---|---------|------------| | 1 | Do structural directives…

Topic 11

✅ Is Chapter Ka Summary

🎯 📌 Yaad Rakho: - 3 Types: Component, Structural (), Attribute directives - \ngIf =…

Topic 12

🧪 Khud Try Karo!

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isLoggedIn, username, role…

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*ngIf se login/logout state handle…

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[ngSwitch] se role ke hisaab se…

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Login/Logout buttons

Comparison

📌 9. Complete Comparison Table

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*ngIf: Structural

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*ngFor: Structural

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*ngSwitch: Structural

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

📘 Angular — Directives ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 Angular — Directives ka 'Component' kya hai?

Complete! 🎉

📘 Angular — Directives Complete!

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