JavaScript & TypeScript
Master modern JavaScript and TypeScript development with comprehensive tutorials and practical examples
Learning Path
Structured tutorials from JavaScript basics to advanced TypeScript
Modern JavaScript (ES6+)
Master the latest JavaScript features and syntax
Async JavaScript Mastery
Handle asynchronous operations like a pro
TypeScript Fundamentals
Get started with TypeScript for better code quality
Advanced TypeScript
Master complex TypeScript patterns and techniques
DOM Manipulation
Interact with web pages using JavaScript
JavaScript Testing
Write reliable tests for your JavaScript code
Quick Tips
Essential tips for writing better JavaScript and TypeScript
Use const and let
Avoid var, prefer const for immutable values and let for variables
Destructuring Assignment
Extract values from objects and arrays efficiently
Template Literals
Use backticks for string interpolation and multiline strings
Optional Chaining
Safely access nested object properties with ?. operator
Code Examples
Practical examples you can use in your projects
TypeScript Interface Example
TypeScriptType-safe user data handling
// User interface definition
interface User {
id: number;
name: string;
email: string;
isActive?: boolean;
}
// Function with typed parameters
function createUser(userData: Omit<User, 'id'>): User {
return {
id: Math.random(),
...userData,
isActive: userData.isActive ?? true
};
}
// Usage example
const newUser = createUser({
name: "John Doe",
email: "john@example.com"
});Modern Async/Await Pattern
JavaScriptClean asynchronous data fetching
// Async function with error handling
async function fetchUserData(userId) {
try {
const response = await fetch(`/api/users/${userId}`);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const userData = await response.json();
return userData;
} catch (error) {
console.error('Failed to fetch user data:', error);
throw error;
}
}
// Usage with proper error handling
async function displayUser(userId) {
try {
const user = await fetchUserData(userId);
console.log('User loaded:', user);
} catch (error) {
console.log('Failed to load user');
}
}Additional Resources
Helpful tools and references for JavaScript & TypeScript development
MDN JavaScript Guide
Comprehensive JavaScript documentation and guides
TypeScript Handbook
Official TypeScript documentation and tutorials
JavaScript.info
Modern JavaScript tutorial with interactive examples
TypeScript Playground
Online TypeScript compiler and editor
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