10 JavaScript Tricks Every Developer Should Know

JavaScript is constantly evolving, and developers who stay up to date can write faster, cleaner, and more efficient code. Here are 10 powerful tricks that will save you time:

1. Destructuring Assignment
const user = { name: 'John', age: 25 };
const { name, age } = user;

2. Optional Chaining
const city = user?.address?.city;

3. Template Literals
const greeting = `Hello, ${name}!`;

4. Spread Operator
const newUser = { ...user, isAdmin: false };

5. Arrow Functions
const sum = (a, b) => a + b;

6. Array Methods (map, filter, reduce)
const evenNumbers = numbers.filter(n => n % 2 === 0);

7. Short-Circuit Evaluation
const isLoggedIn = user && user.loggedIn;

8. Set and Map
o Unique collections and efficient key-value pairs.

9. Debouncing with setTimeout
o Improve performance by limiting how often a function is called.

10. Async/Await
const getData = async () => {
const res = await fetch('/api/data');
const data = await res.json();