JavaScript Formatter & BeautifierFree Tool
Format and beautify JavaScript code instantly. Professional formatting with customizable options, real-time preview, and error detection.
- Real-time formatting
- Syntax highlighting
- Error detection
- Multiple presets
- Custom options
- Export functionality
No additional options for JavaScript yet.
Examples
Basic Function Formatting
Format a simple JavaScript function with proper spacing and semicolons
function hello(){console.log("world");}ES6+ Arrow Functions
Format modern JavaScript with arrow functions and destructuring
const add=(a,b)=>a+b;const users=data.map(u=>({id:u.id,name:u.name}));Object and Array Formatting
Properly format complex object structures
const config={api:{url:"https://api.example.com",timeout:5000,retries:3},features:["auth","logging","caching"]};Key Features
- ✔️Syntax Highlighting
- ✔️Error Detection
- ✔️Auto-complete
- ✔️Linting
- ✔️Validation
- ✔️Custom Rules
- ✔️Real-time Formatting
Frequently Asked Questions
Does this JavaScript formatter support ES6+ syntax?
Yes! Our formatter supports all modern JavaScript features including arrow functions, destructuring, async/await, modules, template literals, and more. It uses Prettier under the hood for reliable formatting.
Can I format JSX code with this tool?
Absolutely! Our JavaScript formatter has full JSX support for React components. For more specialized JSX features, you can also use our dedicated React JSX Formatter.
What formatting styles are supported?
We support popular style guides including Airbnb, Google, Standard, and Prettier defaults. You can also create custom formatting rules to match your team's preferences.
Is the formatting consistent with popular IDEs?
Yes! Our formatter uses the same Prettier engine that's integrated into VS Code, WebStorm, and other popular editors, ensuring consistent results across your development workflow.
Can I format TypeScript code here?
While this tool focuses on JavaScript, it can handle basic TypeScript syntax. For full TypeScript support with type annotations, use our dedicated TypeScript Formatter.
How do I handle formatting errors?
Our formatter includes real-time error detection. If there are syntax errors in your code, they'll be highlighted with specific line numbers and helpful error messages to guide you in fixing them.