JavaScript Best Practices

Use const by Default

const name = 'John'; // Use const
let counter = 0;      // Use let when needed
// Never use var

Use === Instead of ==

5 === '5'; // false (strict)
5 == '5';  // true (coerces)

Use Arrow Functions

const add = (a, b) => a + b;

Handle Errors

try {
  // Code
} catch (error) {
  // Handle
}

Key Takeaway

Use const, ===, arrow functions. Handle errors. Write clean, readable code. Follow modern JavaScript standards.