Angular to React

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How to convert from Angular to React

Transitioning from Angular to React can seem daunting, especially if you are deeply familiar with Angular's methodologies and ecosystem. This guide provides a technical yet accessible roadmap to converting your Angular projects to React, step by step.

Understanding Key Differences: Angular vs. React

Before diving into code conversion, understanding the fundamental differences between Angular and React is crucial. Angular is a full-fledged framework, while React is a library primarily focused on building user interfaces. Here's a quick breakdown of some key differences:

  • Templates and JSX: Angular uses templates with HTML and Angular-specific directives, while React uses JSX, which allows you to write HTML elements in JavaScript.
  • Data Binding: Angular employs two-way data binding, but React uses unidirectional data flow, typically implemented with state and props.
  • Dependency Injection: Angular has a built-in dependency injection system, while React does not, relying instead on context and hooks.

Setting Up Your React Environment

First, ensure your development environment is set up for React:

  1. Install Node.js if you haven't already.
  2. Create a new React project using Create React App:
    npx create-react-app my-react-app
    cd my-react-app

Converting Angular Components to React

Angular Component

Consider the following Angular component:

import { Component } from '@angular/core';

  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
export class ExampleComponent {
  title = 'Hello, Angular!';

Equivalent React Component

To convert this to React, you'll need to create a new component file:

import React, { Component } from 'react';

class Example extends Component {
  constructor(props) {
    this.state = {
      title: 'Hello, React!'

  render() {
    return (

export default Example;

Handling Services and Dependency Injection

Angular services often make use of dependency injection. React does not have this mechanism natively, but you can use context and hooks.

Angular Service

import { Injectable } from '@angular/core';

  providedIn: 'root'
export class DataService {
  getData() {
    return 'Some data';

Equivalent React Hook and Context

import React, { createContext, useContext } from 'react';

const DataContext = createContext();

export const DataProvider = ({ children }) => {
  const getData = () => 'Some data';
  return (
    <DataContext.Provider value={{ getData }}>

export const useData = () => useContext(DataContext);

Managing State: From Angular to React

Angular Two-Way Binding

<input [(ngModel)]="">

React State Management

React does not support two-way binding out of the box. Use hooks like useState:

import React, { useState } from 'react';

const Example = () => {
  const [name, setName] = useState('');

  return (
    <input value={name} onChange={(e) => setName(} />

Routing: Converting Angular Router to React Router

Angular Routing

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './home/home.component';

const routes: Routes = [
  { path: '', component: HomeComponent }

  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
export class AppRoutingModule {}

React Router

First, install React Router:

npm install react-router-dom

Then, set up Routes in React:

import React from 'react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
import Home from './components/Home';

const App = () => (
      <Route exact path="/" component={Home} />

export default App;

Migrating Forms from Angular to React

Angular Form

<form [formGroup]="form">
  <input formControlName="name">

React Form

Here's how you might handle forms in React using controlled components:

import React, { useState } from 'react';

const ExampleForm = () => {
  const [name, setName] = useState('');

  const handleSubmit = (e) => {

  return (
    <form onSubmit={handleSubmit}>
      <input value={name} onChange={(e) => setName(} />
      <button type="submit">Submit</button>

export default ExampleForm;

Final Thoughts on Conversion

The transition from Angular to React involves a fundamental shift in mindset, given their architectural differences. React’s component-based structure, reliance on JSX, and its unidirectional data flow can seem alien initially but offer flexibility and simplicity in the long run.

To recap:

  • Set up your React development environment.
  • Convert your Angular components to React components.
  • Handle services and data management using React's context and hooks.
  • Transition Angular routing to React Router.
  • Migrate forms with controlled components.

With patience and practice, converting from Angular to React can be an enriching process that enhances your skill set and broadens your development capabilities.

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