JavaScript ECMAScript Feature Matrix

Comprehensive JavaScript/ECMAScript feature matrix covering all versions from ES5 to ES2024. Explore modern JavaScript features including arrow functions, async/await, optional chaining, private fields, and more. Features browser compatibility for Chrome, Firefox, Safari, Edge, plus Node.js support information. Perfect for legacy JavaScript migration, learning modern features, and ensuring cross-browser compatibility.
ES5-ES2024 Coverage Browser Compatibility Node.js Support Migration Guide
Quick Examples 
ES6: Arrow functions, let/const
ES2020: Optional chaining ?.
ES2022: Top-level await
Filter Features
Browser Compatibility
Migration Helper
Legend
✓ Supported
NEW Introduced in version
PARTIAL Partial support
× Not supported
POLYFILL Requires polyfill
NODE Node.js support
JavaScript Feature Matrix
Export Matrix

Practical Applications & Use Cases

Modern JavaScript Feature Adoption & Learning

Explore new JavaScript features and understand when and how to use them in your projects

  • Review ES6+ features available for your target environment
  • Study code examples for modern syntax patterns
  • Check browser compatibility for critical features
  • Migrate legacy code to use modern syntax where applicable
Pro Tip: Arrow functions and destructuring are among the most impactful ES6 features. Start with these for maximum benefit.

Cross-Browser Compatibility Assessment & Polyfill Strategy

Determine which modern JavaScript features require polyfills or transpilation for target browsers

  • Identify target browser requirements for your application
  • Check feature support across all target browsers
  • Plan polyfill strategy for unsupported features
  • Configure build tools for automatic transpilation
Pro Tip: Use browserslist configuration in package.json to automatically target the right browsers for transpilation.

Development Team JavaScript Standards & Code Review

Establish consistent JavaScript standards and best practices across development teams

  • Define minimum JavaScript version for team projects
  • Document which modern features are approved for use
  • Configure linting tools to enforce feature usage
  • Create team guidelines for feature adoption timeline
Pro Tip: Create a JavaScript style guide that matches your teams' target environments. Update quarterly as support improves.

Industry-Specific Applications

web development:

Frontend application development, library creation, framework selection, code modernization planning

nodejs backend:

Server-side JavaScript development, backend framework selection, async/await implementation, Node.js version planning

mobile development:

React Native development, cross-platform applications, feature compatibility testing, version management

education:

JavaScript teaching, computer science curriculum, language feature demonstrations, programming education

enterprise development:

Corporate coding standards, team guidelines creation, modernization planning, legacy code migration

open source:

Library compatibility guarantees, feature documentation, contribution guidelines, version support commitments

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What JavaScript features and browser compatibility does this matrix show?
The matrix covers ECMAScript versions ES5-ES2024 with modern features like arrow functions, async/await, optional chaining, private fields, and more. Includes comprehensive browser support for Chrome, Firefox, Safari, Edge, plus Node.js compatibility information.
How do I use this tool for JavaScript migration planning?
Select your current JavaScript level (ES5, ES2015, etc.) and target version, then generate a migration plan. The tool shows new features available, browser compatibility requirements, and step-by-step modernization guidance with code examples.
Which browsers and JavaScript environments are supported?
The matrix includes support information for Chrome, Firefox, Safari, Edge browsers with specific version numbers, plus Node.js compatibility. Features polyfill availability, browser compatibility checking, and environment-specific recommendations.
How accurate is the browser compatibility information?
Browser support data is based on official ECMAScript specifications, MDN documentation, and Can I Use database. Each feature includes specific browser version requirements, polyfill availability, and Node.js support information for accurate planning.
Can I export the JavaScript feature matrix and compatibility data?
Yes! Export options include HTML tables for documentation, CSV data for analysis, JSON for integration, copyable text matrices, and detailed browser compatibility reports. Perfect for team planning, documentation, and development reference.

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