Google JavaScript Style Guide

Official Google JavaScript coding standards for ES6+ code.

Golden Rules

1. Use const by default — let only when reassignment needed, never var
2. Arrow functions for callbacks — traditional functions for methods
3. Template literals for string interpolation
4. Destructuring where it improves readability
5. Named exports over default exports
6. JSDoc for public APIs — document parameters and return types
7. 2-space indentation — consistent formatting

Quick Reference

Naming Conventions