ES6+

Summary

The modern JavaScript syntax introduced from ES2015 onward — arrow functions, destructuring, template literals, spread/rest, modules and more — now baseline knowledge. Modern JavaScript is more than syntax: these features provide clearer data transformation, modularity, safer scoping, concise functions, and better ways to express common patterns.

• 1Make a checklist of ES6+ features and confirm you're comfortable with each. Validate your understanding by applying it in a small practical example.
• 2Rewrite an old ES5 script using modern ES6+ syntax throughout. Validate your understanding by applying it in a small practical example.
• 3Follow the yearly ECMAScript proposal process to know what's coming next.