Format reference

JS Format Hub

JavaScript (.js) files contain client- or server-side code executed by JavaScript engines in browsers or Node.js. They support ES5–ESNext syntax, modules, and async patterns. Use sample .js files to validate bundling, minification, linting, and runtime behavior across environments.

Open Sample Page Open Manifest JSON
6 Files
326 Downloads (30d)
text/javascript
Related Formats in Code

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CSS (6) GO (6) JAVA (6) PHP (6) PY (6) RB (6) RS (6) TS (6)
Related Comparisons

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TypeScript vs JavaScript Files

Compare typed TypeScript source files with plain JavaScript.

Open Comparison

Lua vs JavaScript Files

Compare lightweight embeddable Lua scripts against JavaScript runtime ubiquity.

Open Comparison
Format Strategy Links

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Open JS FAQ

Best Format for Use Cases

Best Format for Browser App Source Code

Conversion Guides

How to Convert JS to LUA How to Convert JS to TS How to Convert LUA to JS How to Convert TS to JS How to Convert CSS to JS How to Convert GO to JS
Implementation Notes

Keep implementation notes explicit.

Use the manifest endpoint for deterministic fixture selection in CI, then validate MIME/type detection against actual parser output.

If this format appears in multiple categories, prefer category-specific hub pages to keep test assumptions aligned with real usage.