Key Similarities Across React, Angular, and Vue

The core principles are often the same, but they differ in syntax, structure, and best practices.

1. Component-Based Architecture – Everything is broken down into reusable components.
2. State Management – Each framework has a way to manage state (React uses hooks/context, Angular has services & RxJS, Vue has Vuex/Pinia).
3. Virtual DOM (except Angular) – React and Vue use a virtual DOM to optimize rendering, whereas Angular has a different change detection strategy.
4. Reactive Programming – They all deal with user interactions dynamically (React with hooks, Angular with RxJS, Vue with reactive state).
5. Routing – React Router, Angular Router, and Vue Router handle navigation similarly.
6. Lifecycle Methods (Even if Named Differently) – React: useEffect, componentDidMount, componentWillUnmount Angular: ngOnInit, ngOnDestroy Vue: mounted, beforeDestroy
7. Directives – Ways to modify the DOM based on logic: React: {condition && <Component />} Angular: *ngIf, *ngFor Vue: v-if, v-for

Main Differences

Best Way to Study for a Job Across All Three

1. Master JavaScript & TypeScript Basics
2. Focus on Component-Based Development
3. Understand Performance Optimizations
4. Learn Routing & State Management
5. Understand Common Design Patterns & Best Practices

Best Way to Study for a Job Across All Three

Master JavaScript & TypeScript Basics

• Understand ES6+ (Destructuring, Spread, Async/Await, Closures, etc.).
• TypeScript is becoming a standard for React, Angular, and Vue.

Focus on Component-Based Development

• Learn how to create, pass props/data, manage state, and communicate between components.
• Example: Convert a component between React, Angular, and Vue to see how they differ.

Understand Performance Optimizations

• React: useMemo, useCallback, Lazy Loading
• Angular: Change Detection Strategies, OnPush
• Vue: Computed Properties, Keep-Alive

Learn Routing & State Management

• React: useState, useContext, Redux
• Angular: @Injectable(), RxJS, NgRx
• Vue: Vuex, Pinia

Understand Common Design Patterns & Best Practices

• Modular coding (breaking down components)
• DRY (Don’t Repeat Yourself)
• SOLID principles

Smartest Approach to Interviews

Instead of learning each framework individually, focus on core front-end concepts and then just learn framework-specific syntax:

Example: 👉 Component Communication

• React: Props & Context
• Angular: @Input(), @Output()
• Vue: props, $emit

👉 Forms Handling

• React: Controlled & Uncontrolled Components
• Angular: Reactive Forms
• Vue: v-model

👉 State Management

• React: Redux, Context API
• Angular: Services, NgRx
• Vue: Vuex, Pinia

👉 API Calls

• React: useEffect + Axios/Fetch
• Angular: HttpClientModule
• Vue: mounted() + Fetch

Key Differences in Debugging React vs Angular

Debugging React ⚛️ Using React Developer Tools

Install React DevTools Extension

✅ React Developer Tools for Chrome and Firefox.

Features & How to Use Them

1️⃣ Components Tab

• Inspect the component tree
• See props, state, hooks, and context
• Modify values in real-time

2️⃣ Profiler Tab

• Analyze component re-renders
• Identify performance bottlenecks
• Optimize with React.memo() and useMemo()

3️⃣ Inspect Hooks & State

• Click on a component
• Expand Hooks to view useState, useReducer, etc.

4️⃣ Edit Component Props & State Live

• Right-click a component → Select Edit Props
• Modify values and see instant UI updates

Debugging Angular 🅰️ Using Angular DevTools & Augury

Install Angular DevTools Extension

✅ Angular DevTools for Chrome. ✅ Augury (More advanced debugging tool).

Features & How to Use Them

1️⃣ Component Explorer

• View the component hierarchy
• See inputs (props) and outputs (events)

2️⃣ Change Detection Profiler

• Track when components re-render
• Detect unnecessary change detection cycles

3️⃣ Dependency Injection Debugging

• See which services are injected into components

4️⃣ Debug Router States

• Open the Router Tree tab
• Inspect current routes, params, and navigation state

5️⃣ Live Component Editing (Augury)

• Modify component inputs in real-time
• See how changes affect the app instantly

Debugging Vue 🟩 Using Vue DevTools

Install Vue DevTools Extension

✅ Vue DevTools for Chrome & Firefox.

Features & How to Use Them

1️⃣ Components Tab

• Inspect Vue component hierarchy
• See props, state (data()), computed properties, and watchers

2️⃣ Vuex Debugging (For State Management)

• View Vuex store mutations and state changes
• Time-travel debugging (undo state changes)

3️⃣ Emit Events Debugging

• Check event listeners and emitted events
• See how child components communicate with parents

4️⃣ Live Component Editing

• Modify state values and see instant UI updates

Summary & Study Tip

React, Angular, and Vue DevTools all allow you to inspect components, modify state, and analyze performance.

The debugging concepts are similar, but the UI and tools differ slightly.

If you're switching between frameworks, focus on component inspection, event tracking, and performance profiling!