diff --git a/standards/js.md b/standards/js.md
index 1b63c41..4b01029 100644
--- a/standards/js.md
+++ b/standards/js.md
@@ -1,5 +1,7 @@
 # Js
 
+No deprecated or removed elements, functions or practices are allowed.
+
 ## Variable scope
 
 Variables should be defined with the scope in mind. `const` and `let` are the preferred definitions.