Clean Code JavaScript – Naming Patterns

Table of Contents

• Principles
• Variables
• Functions
• Booleans
• Bad vs Good Examples

Principles

• Names should reveal intent
• Avoid abbreviations and mental mapping
• Use domain language consistently

Variables

// ❌ Bad
const d = 86400000;

// ✅ Good
const MILLISECONDS_PER_DAY = 86400000;

Functions

// ❌ Bad
function getUser(u) {}

// ✅ Good
function fetchUserById(userId) {}

Booleans

// ❌ Bad
if (!user.isNotActive) {}

// ✅ Good
if (user.isActive) {}

Bad vs Good Examples

// ❌ Bad
const data = getData();

// ✅ Good
const usersResponse = fetchUsers();