What is JavaScript Formatting?
JavaScript formatting is the process of organizing messy JS code into a standardized, readable format. Good code formatting improves readability, makes debugging easier, and reduces errors. Formatting includes: consistent indentation, proper line breaks, operator spacing, and bracket alignment. Minification removes all whitespace and comments, significantly reducing file size and improving page load speed.
How to Use
Basic Operations
- Paste or type JavaScript code in the left input box
- Select indent size, quote style, and semicolon settings
- Click 'Format' to beautify code, or 'Validate' to check syntax
- View results on the right (with syntax highlighting)
- Click 'Copy' to copy to clipboard
Options Description
FAQ
Q: Will formatting change my code's execution result?
A: No. Formatting only adjusts code layout (spaces, line breaks, indentation) without changing any logic, variable names, or functionality. The execution result remains exactly the same.
Q: Does it support ES6+ syntax?
A: Yes. The tool is fully compatible with all ES6+ syntax including arrow functions, destructuring, template literals, async/await, classes, and more.
Q: Can minified code be restored?
A: Minification is irreversible. We recommend keeping the original code and using minified versions only for production deployment. To restore, you can only reformat, but variable names cannot be recovered.
Q: What if syntax validation finds errors?
A: The tool will indicate the approximate error location. Common errors include: mismatched brackets, missing semicolons, unclosed strings. Fix according to the prompt and check again.
Q: Is my data safe?
A: Completely safe. All processing is done locally in the browser, and data is never uploaded to any server.