> For the complete documentation index, see [llms.txt](https://syllabus.migracode.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://syllabus.migracode.org/courses/introduction-3/course-content/react/extra-materials.md).

# Extra Materials

- [Class components](https://syllabus.migracode.org/courses/introduction-3/course-content/react/extra-materials/class-components.md)
- [Routing](https://syllabus.migracode.org/courses/introduction-3/course-content/react/extra-materials/routing.md)