Skill Topic · Cinematic

📘 Angular — Component Communication

Components ke beech data share karo — Parent ↔ Child ↔ Siblings! Jaise ek office me boss team ko…

Overview

📘 Angular — Component Communication — Quick Facts

📌

"@Input() data": C

🎯

C -->: "@Output() event"

⚡

P -->: "@ViewChild()"

🔑

P <-->: "BehaviorSubject"

Topic 1

📌 1. Communication Methods (Overview)

💡

📨 Boss → Employee = @Input() —…

🔑

📢 Employee → Boss = @Output() —…

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📞 Boss calls Employee directly =…

🎯

📋 Notice Board (shared) = Service…

Topic 2

📌 2. @Input — Parent to Child (Data Pass)

💡 🎯 Analogy — Parcel Delivery Parent ek courier hai jo child ko parcel (data) bhejta hai.…

Topic 3

📌 3. @Output — Child to Parent (Event Emit)

🎯 🎯 Analogy — Fire Alarm Child ek fire alarm hai — problem aaye to button dabao (emit),…

Topic 4

📌 4. Two-Way Custom Binding — [(banana-in-a-box)]

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@Input() xyz

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@Output() xyzChange ← property…

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Parent me: [(xyz)]="value" ←…

Topic 5

📌 5. @ViewChild — Parent Directly Access Child

🔑 🎯 Analogy — Remote Control @ViewChild = TV ka remote. Parent ke paas child ka remote hai…

Topic 6

📌 6. Service-Based Communication (Any ↔ Any)

✨ 🎯 Analogy — WhatsApp Group Service = WhatsApp group. Koi bhi member message bhej sakta…

Topic 7

📌 7. Communication Flow Summary

🌟 `mermaid graph TD subgraph "Direct (Parent-Child)" P1["Parent"] -->|"@Input"| C1["Child"]…

Topic 8

📌 8. Common Mistakes — Beginners Ye Galtiyan Karte Hain

🚀 | # | ❌ Mistake | ✅ Solution | |---|-----------|------------| | 1 | @Input value ngOnInit…

Topic 9

✅ Summary

📚 📌 Yaad Rakho: - @Input() = Parent → Child data pass — [property]="value" - @Output() =…

Topic 10

🧪 Khud Try Karo!

💡 Exercise 1: Product Card (@Input + @Output) ` 1. ng g c exercises/product-card 2. @Input:…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

📘 Angular — Component Communication ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 Angular — Component Communication ka 'C -->' kya hai?

Complete! 🎉

📘 Angular — Component Communication Complete!

Aliens School · HIEN · Cinematic Knowledge

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