> For the complete documentation index, see [llms.txt](https://docs.openflower.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openflower.org/business-logic-in-apps/write-javascript.md).

# Write JavaScript

- [JavaScript query](https://docs.openflower.org/business-logic-in-apps/write-javascript/javascript-query.md)
- [Temporary state](https://docs.openflower.org/business-logic-in-apps/write-javascript/temporary-state.md)
- [Transformers](https://docs.openflower.org/business-logic-in-apps/write-javascript/transformers.md)
- [Data responder](https://docs.openflower.org/business-logic-in-apps/write-javascript/data-responder.md)
- [Built-in JS functions](https://docs.openflower.org/business-logic-in-apps/write-javascript/built-in-js-functions.md)