JavaScript Formatter
Format and beautify JavaScript code with proper indentation and structure.
Frequently Asked Questions
Why does the formatter still output code even when my JavaScript is broken?
This formatter is rule-based, not parser-backed. It rewrites whitespace and punctuation layout, but it does not validate syntax or tell you where a real JavaScript parse error is.
Does it format automatically while I type?
No. This tool only runs when you click Format, so the output pane stays unchanged until you trigger it.
What kind of formatting does it actually do?
It first compacts the code, then re-adds line breaks after braces, brackets, semicolons, and most commas. Indentation is fixed at 2 spaces.
Why did my regex-heavy code format strangely?
The formatter understands strings, but it is not a full JavaScript parser. Regex literals or other slash-heavy patterns can be misread because comment handling is heuristic.
Can I export the formatted result?
Yes. You can copy the output or download it as script.js, and the tool also shows output line and character counts.