diff --git a/notes/web/javascript/javascriptAdvancedNotes.md b/notes/web/javascript/javascriptAdvancedNotes.md
index e41c48fdb8..1bec14b9aa 100644
--- a/notes/web/javascript/javascriptAdvancedNotes.md
+++ b/notes/web/javascript/javascriptAdvancedNotes.md
@@ -7461,7 +7461,10 @@ window.localStorage = {
 Object.values = () => [];
 ```
 
-`jest.env.setup.js`: inject more expect DOM assertion
+`jest.env.setup.js`:
+
+- Inject more expect DOM assertion.
+- [Jest DOM Expect API](https://github.com/testing-library/jest-dom)
 
 ```js
 import '@testing-library/jest-dom/extend-expect';