JavaScript Formatter & Beautifier
Format, beautify, compress and obfuscate JavaScript code
JavaScript Processing
Drop JS files here
or use the button below to select files
Processing Result
Results will be displayed here after processing
Usage Instructions
Select Operation Type
Choose the operation to perform on JavaScript code: Format, Compress, or Obfuscate.
Configure Options
Configure the corresponding option parameters based on the selected operation type.
Provide Source Code
Upload JavaScript files or directly input code in the text box.
Execute Processing
Click the "Process Code" button to start processing.
Get Results
After processing is complete, you can view, copy, or download the processed code.
JavaScript Formatter Basics
What is Code Formatting
Code formatting is the process of rearranging code according to consistent style rules, including indentation, spaces, line breaks, quotation styles, etc. JavaScript formatting tools can automatically handle these details, making code more readable and maintainable.
Why Code Formatting Matters
A unified code style can improve team collaboration efficiency, reduce code review time, and lower the cost of understanding and maintaining code. Formatted code also makes it easier to spot syntax errors and logical issues, improving code quality.
Difference Between Formatting, Compression & Obfuscation
- Formatting: Makes code more readable, preserves all functionality
- Compression: Removes whitespace and comments, reduces file size
- Obfuscation: Renames variables and functions, increases code complexity to protect intellectual property
Common JavaScript Code Styles
- Standard JS: Semicolon-less style, uses double quotes
- Airbnb JS Style: Uses semicolons, 2-space indentation
- Google JS Style: Uses semicolons, 2-space indentation
- Prettier Default Style: 2-space indentation, double quotes
Prettier Formatting Principle
Prettier uses a two-stage process: first parsing code into an Abstract Syntax Tree (AST), then completely regenerating code regardless of original formatting. This ensures code style consistency but means some manual formatting details may be lost.
Code Formatting Best Practices
- Unify code style in team projects
- Use editor plugins for automatic formatting
- Format code before Git commits
- Use compressed code for production environments
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