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JavaScript & TypeScript Comparison Tool

Line-Based Comparison

Our tool performs efficient line-by-line comparison of JavaScript and TypeScript code. While not AST-based, it provides fast and reliable diff results with syntax highlighting for both languages. Perfect for quick code reviews and identifying changes in your JS/TS files.

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Original JS - Edit directly or

Modified JS - Edit directly or

Why use this JavaScript & TypeScript tool?

Compare JavaScript, TypeScript, and JSX code with syntax highlighting

Smart diff detection for ES6+, React, and Node.js code

Configurable whitespace and case sensitivity settings

Support for modern JavaScript (ES2015-2023) features

Export differences as formatted code or visual diffs

Handles CommonJS and ES Modules syntax

Language & Framework Support

Note: Our comparison uses line-based diffing with syntax highlighting. While not AST-aware, it supports all JavaScript and TypeScript syntax through proper formatting and highlighting.

JavaScript Support

  • ✓ ES2015 (ES6)
  • ✓ ES2016-ES2023
  • ✓ ESNext Features
  • ✓ Legacy ES5 Support

TypeScript Support

  • ✓ Latest TypeScript
  • ✓ Type Definitions
  • ✓ TSX Support
  • ✓ Decorators

Framework Support

  • ✓ React/JSX
  • ✓ Vue Templates
  • ✓ Angular TypeScript
  • ✓ Node.js Modules

How It Works

How JavaScript Compare Works
  1. 1Paste your original JavaScript/TypeScript code in the left editor
  2. 2Paste your modified code in the right editor
  3. 3The tool automatically detects and highlights syntax-aware differences
  4. 4Use the settings panel to ignore whitespace or match case sensitivity
  5. 5Export the comparison as a formatted diff

JavaScript & TypeScript Features

•Syntax-Aware Comparison: Understands JavaScript structure beyond plain textActive
•ES6+ Support: Full support for modern JavaScript features
•TypeScript Integration: Native TypeScript and JSX parsing
•Format Preservation: Maintains code style and formatting
•AST-Based Comparison: Intelligent code structure analysis
•Cross-Browser Support: Works in all modern browsers
•Node.js Compatible: Compare server-side JavaScript code

Pro Tip

When comparing minified JavaScript, use the "Ignore Whitespace" option to focus on actual code changes rather than formatting differences. Our tool can handle both beautified and minified JavaScript code.

Common JavaScript Comparison Use Cases

Frontend Development

  • • Compare React/Vue component changes
  • • Track JavaScript bundle differences
  • • Debug transpiled code issues
  • • Review framework upgrades

Backend Development

  • • Compare Node.js module versions
  • • Review API endpoint changes
  • • Debug server-side scripts
  • • Track middleware updates

Premium JavaScript & TypeScript Features

Unlock advanced JavaScript and TypeScript comparison capabilities with our premium features:

  • ✨Advanced JavaScript syntax validation
  • ✨Custom formatting rules
  • ✨Batch file comparison
  • ✨Code review annotations
  • ✨Team collaboration features
  • ✨AST-based comparison for structural changes
  • ✨Custom ESLint and Prettier integration
  • ✨Semantic version comparison for npm packages