> For the complete documentation index, see [llms.txt](https://docs.thunkable.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.thunkable.com/getting-started/sample-apps-and-tutorials/video-tutorials/user-interface-and-design/text.md).

# Text

- [Implement Text Input Validation](https://docs.thunkable.com/getting-started/sample-apps-and-tutorials/video-tutorials/user-interface-and-design/text/implement-text-input-validation.md): In this tutorial, we’ll implement text input validation to disable a button until text input conditions are met.
