diff --git a/README.md b/README.md
index c5e3e66..cbfe3f6 100644
--- a/README.md
+++ b/README.md
@@ -48,3 +48,9 @@ Use your own project url:
 ```md
 [![type-coverage](https://img.shields.io/badge/dynamic/json.svg?label=type-coverage&prefix=%E2%89%A5&suffix=%&query=$.typeCoverage.atLeast&uri=https%3A%2F%2Fraw.githubusercontent.com%2Fplantain-00%2Ftype-coverage%2Fmaster%2Fpackage.json)](https://github.com/plantain-00/type-coverage)
 ```
+
+## FAQ
+
+> Q: Does this count JavaScript files?
+
+Yes, This package calls Typescript API, Typescript can parse Javascript file(with `allowJs`), then this package can too.