Formateur JavaScript - Embellisseur de Code

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Formatez et embellissez le code JavaScript avec une indentation et un espacement appropriés. Essentiel pour la révision de code, le débogage de scripts minifiés et le maintien de bases de code lisibles. Supporte la syntaxe ES6+.
Advanced JavaScript Formatter & Code Beautifier

Professional JavaScript code formatting tool for developers and code reviewers. Transform minified code into clean, readable JavaScript.

Intelligent code parsing with AST-based formatting Customizable indentation styles ES6+/TypeScript syntax support Automatic code structure analysis and optimization Configurable formatting rules and coding standards Batch processing for entire codebases and projects
Practical Examples
Minified Library Debugging

Transform minified JavaScript into readable code

BEFORE (Minified JavaScript) 
function a(e){return e*2}
AFTER (Beautified JavaScript) 
function multiply(number) {\n    return number * 2;\n}
React Component Formatting

Format React components with proper JSX indentation and structure

BEFORE (Minified JavaScript) 
const TodoApp=()=>{const[todos,setTodos]=useState([]);const[inputValue,setInputValue]=useState("");const addTodo=()=>{if(inputValue.trim()){setTodos([...todos,{id:Date.now(),text:inputValue,completed:false}]);setInputValue("");}};const toggleTodo=(id)=>{setTodos(todos.map(todo=>todo.id===id?{...todo,completed:!todo.completed}:todo));};const deleteTodo=(id)=>{setTodos(todos.filter(todo=>todo.id!==id));};return(<div className="todo-app"><input value={inputValue}onChange={(e)=>setInputValue(e.target.value)}onKeyPress={(e)=>e.key==="Enter"&&addTodo()}placeholder="Add a todo..."/><button onClick={addTodo}>Add</button><ul>{todos.map(todo=><li key={todo.id}className={todo.completed?"completed":""}><span onClick={()=>toggleTodo(todo.id)}>{todo.text}</span><button onClick={()=>deleteTodo(todo.id)}>Delete</button></li>)}</ul></div>);};
AFTER (Beautified JavaScript) 
const TodoApp = () => {
    const [todos, setTodos] = useState([]);
    const [inputValue, setInputValue] = useState("");
    
    const addTodo = () => {
        if (inputValue.trim()) {
            setTodos([
                ...todos,
                {
                    id: Date.now(),
                    text: inputValue,
                    completed: false
                }
            ]);
            setInputValue("");
        }
    };
    
    const toggleTodo = (id) => {
        setTodos(
            todos.map(todo =>
                todo.id === id
                    ? { ...todo, completed: !todo.completed }
                    : todo
            )
        );
    };
    
    const deleteTodo = (id) => {
        setTodos(todos.filter(todo => todo.id !== id));
    };
    
    return (
        <div className="todo-app">
            <input
                value={inputValue}
                onChange={(e) => setInputValue(e.target.value)}
                onKeyPress={(e) => e.key === "Enter" && addTodo()}
                placeholder="Add a todo..."
            />
            <button onClick={addTodo}>Add</button>
            <ul>
                {todos.map(todo => (
                    <li
                        key={todo.id}
                        className={todo.completed ? "completed" : ""}
                    >
                        <span onClick={() => toggleTodo(todo.id)}>
                            {todo.text}
                        </span>
                        <button onClick={() => deleteTodo(todo.id)}>
                            Delete
                        </button>
                    </li>
                ))}
            </ul>
        </div>
    );
};
Technical Features
  • AST-based parsing for safe formatting
  • Configurable indentation
  • Smart bracket placement and alignment
  • Automatic semicolon insertion and removal
  • JSX/TSX formatting with proper attribute alignment
  • Comment preservation with intelligent repositioning
Professional Use Cases
Code Review & Collaboration
Standardize code formatting across team
Legacy Code Maintenance
Improve readability of inherited code
Debugging Production Issues
Format minified code for easier troubleshooting
Documentation & Training
Create clean code examples for tutorials and guides
Code Quality Assurance
Ensure consistent formatting standards in projects
IDE Integration
Enhance development workflow with automated formatting
Best Practices
  • Establish consistent formatting rules across team
  • Integrate with ESLint and Prettier
  • Use format-on-save in IDE
  • Create configuration files for project-specific formatting standards
  • Format code before code reviews to focus on logic rather than style
  • Document your formatting conventions in project README files
Troubleshooting Guide
Parsing Errors
Check for syntax errors in original code
Formatting Inconsistencies
Verify indentation settings and bracket placement rules
Large File Performance
Process very large files in smaller chunks
JSX/React Issues
Ensure JSX mode is enabled for React component formatting
ES6+ Compatibility
Update parser settings to support latest JavaScript features