Dharmendra Kumar
Posted on June 10, 2024
Introduction to Client-Side Frameworks
In the modern web development landscape, client-side frameworks have become essential tools for building dynamic, responsive, and efficient web applications. These frameworks provide structured and reusable code, making development faster and easier. This post explores some of the most popular JavaScript client-side frameworks: React, Ember, Vue, Svelte, and Angular.
Framework Main Features
Before diving into specific frameworks, let's outline some common features of client-side frameworks:
- Component-based architecture: Building UIs as a collection of reusable components.
- State management: Handling application state efficiently.
- Routing: Managing navigation between different parts of an application.
- Data binding: Synchronizing data between UI and model.
- Performance optimization: Ensuring smooth and fast user experiences.
React
Getting Started with React
React is a JavaScript library for building user interfaces. It is maintained by Facebook and a community of individual developers and companies.
Installation:
npx create-react-app my-app
cd my-app
npm start
Beginning Our React Todo List
Basic Structure:
import React from 'react';
import ReactDOM from 'react-dom';
function App() {
return (
<div className="App">
<h1>Todo List</h1>
</div>
);
}
ReactDOM.render(<App />, document.getElementById('root'));
Componentizing Our React App
Creating Components:
function TodoItem({ todo }) {
return <li>{todo.text}</li>;
}
function TodoList({ todos }) {
return (
<ul>
{todos.map(todo => <TodoItem key={todo.id} todo={todo} />)}
</ul>
);
}
React Interactivity: Events and State
Managing State:
function App() {
const [todos, setTodos] = React.useState([]);
function addTodo() {
setTodos([...todos, { id: Date.now(), text: 'New Todo' }]);
}
return (
<div>
<button onClick={addTodo}>Add Todo</button>
<TodoList todos={todos} />
</div>
);
}
React Interactivity: Editing, Filtering, Conditional Rendering
Editing and Filtering:
function TodoItem({ todo, onEdit }) {
return (
<li>
{todo.text} <button onClick={() => onEdit(todo)}>Edit</button>
</li>
);
}
function TodoList({ todos, onEdit }) {
return (
<ul>
{todos.map(todo => (
<TodoItem key={todo.id} todo={todo} onEdit={onEdit} />
))}
</ul>
);
}
Accessibility in React
Adding ARIA Attributes:
function App() {
return (
<div>
<h1 aria-live="polite">Todo List</h1>
{/* Rest of the components */}
</div>
);
}
React Resources
Ember
Getting Started with Ember
Ember.js is an open-source JavaScript web framework, based on the Model-View-ViewModel (MVVM) pattern.
Installation:
npm install -g ember-cli
ember new my-app
cd my-app
ember serve
Ember App Structure and Componentization
Basic Structure:
// app/components/todo-list.js
import Component from '@glimmer/component';
export default class TodoListComponent extends Component {
}
Ember Interactivity: Events, Classes, and State
Managing State:
// app/components/todo-list.js
import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';
export default class TodoListComponent extends Component {
@tracked todos = [];
addTodo() {
this.todos = [...this.todos, { id: Date.now(), text: 'New Todo' }];
}
}
Ember Interactivity: Footer Functionality, Conditional Rendering
Conditional Rendering:
{{#if this.todos.length}}
<ul>
{{#each this.todos as |todo|}}
<li>{{todo.text}}</li>
{{/each}}
</ul>
{{else}}
<p>No todos yet!</p>
{{/if}}
Routing in Ember
Defining Routes:
// app/router.js
Router.map(function() {
this.route('todos');
});
Ember Resources and Troubleshooting
Vue
Getting Started with Vue
Vue.js is a progressive JavaScript framework for building user interfaces.
Installation:
npm install -g @vue/cli
vue create my-app
cd my-app
npm run serve
Creating Our First Vue Component
Basic Component:
<template>
<div>
<h1>Todo List</h1>
</div>
</template>
<script>
export default {
name: 'App',
}
</script>
Rendering a List of Vue Components
List Rendering:
<template>
<ul>
<li v-for="todo in todos" :key="todo.id">{{ todo.text }}</li>
</ul>
</template>
<script>
export default {
data() {
return {
todos: []
}
}
}
</script>
Adding a New Todo Form: Vue Events, Methods, and Models
Handling Form Input:
<template>
<div>
<input v-model="newTodo" @keyup.enter="addTodo">
<button @click="addTodo">Add Todo</button>
<ul>
<li v-for="todo in todos" :key="todo.id">{{ todo.text }}</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
newTodo: '',
todos: []
}
},
methods: {
addTodo() {
this.todos.push({ id: Date.now(), text: this.newTodo });
this.newTodo = '';
}
}
}
</script>
Styling Vue Components with CSS
Adding Styles:
<template>
<div class="todo-list">
<!-- rest of the component -->
</div>
</template>
<style>
.todo-list {
font-family: Arial, sans-serif;
}
</style>
Using Vue Computed Properties
Computed Properties:
<script>
export default {
data() {
return {
todos: []
}
},
computed: {
todoCount() {
return this.todos.length;
}
}
}
</script>
Vue Conditional Rendering: Editing Existing Todos
Editing Todos:
<template>
<ul>
<li v-for="todo in todos" :key="todo.id">
<input v-model="todo.text">
</li>
</ul>
</template>
<script>
export default {
data() {
return {
todos: []
}
}
}
</script>
Vue Refs and Lifecycle Methods for Focus Management
Using Refs:
<template>
<input ref="todoInput">
</template>
<script>
export default {
mounted() {
this.$refs.todoInput.focus();
}
}
</script>
Vue Resources
Svelte
Getting Started with Svelte
Svelte is a radical new approach to building user interfaces. Unlike traditional frameworks, Svelte shifts much of the work to compile time.
Installation:
npx degit sveltejs/template my-app
cd my-app
npm install
npm run dev
Starting Our Svelte Todo List App
Basic Structure:
<script>
let todos = [];
</script>
<main>
<h1>Todo List</h1>
</main>
Dynamic Behavior in Svelte: Working with Variables and Props
Adding Todos:
<script>
let todos = [];
let newTodo = '';
function addTodo() {
todos = [...todos, { id: Date.now(), text: newTodo }];
newTodo = '';
}
</script>
<input bind:value={newTodo} on:keyup.enter={addTodo}>
<button on:click={addTodo}>Add Todo</button>
<ul>
{#each todos as todo (todo.id)}
<li>{todo.text}</li>
{/each}
</ul>
Componentizing Our Svelte App
Creating Components:
<!-- TodoItem.svelte -->
<script>
export let todo;
</script>
<li>{todo.text}</li>
Advanced Svelte: Reactivity, Lifecycle, Accessibility
Reactive Statements:
<script>
let count = 0;
$: doubled = count * 2;
</script>
<p>Count: {count}</p>
<p>D
oubled: {doubled}</p>
<button on:click={() => count += 1}>Increment</button>
Working with Svelte Stores
Creating a Store:
// store.js
import { writable } from 'svelte/store';
export const todos = writable([]);
TypeScript Support in Svelte
Using TypeScript:
npx degit sveltejs/template my-app
cd my-app
node scripts/setupTypeScript.js
npm install
npm run dev
Deployment and Next Steps
Deploying Svelte App:
npm run build
Svelte Resources
Angular
Getting Started with Angular
Angular is a platform for building mobile and desktop web applications.
Installation:
npm install -g @angular/cli
ng new my-app
cd my-app
ng serve
Beginning Our Angular Todo List App
Basic Structure:
// app/app.component.ts
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
template: `
<h1>Todo List</h1>
`
})
export class AppComponent {}
Styling Our Angular App
Adding Styles:
/* src/styles.css */
body {
font-family: Arial, sans-serif;
}
Creating an Item Component
Item Component:
// app/todo-item/todo-item.component.ts
import { Component, Input } from '@angular/core';
@Component({
selector: 'app-todo-item',
template: `<li>{{ todo.text }}</li>`
})
export class TodoItemComponent {
@Input() todo;
}
Filtering Our To-Do Items
Filtering Todos:
// app/app.component.ts
export class AppComponent {
todos = [];
filter = '';
get filteredTodos() {
return this.todos.filter(todo => todo.text.includes(this.filter));
}
}
Building Angular Applications and Further Resources
Building App:
ng build
Angular Resources
Conclusion
Client-side frameworks are essential for modern web development, providing structure and efficiency. Each framework—React, Ember, Vue, Svelte, and Angular—has its strengths and unique features. By understanding these frameworks and their core concepts, developers can choose the best tool for their projects and build robust, dynamic web applications.
Posted on June 10, 2024
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