diff --git a/src/data/roadmaps/javascript/content/102-javascript-datatypes/102-typeof-operator.md b/src/data/roadmaps/javascript/content/102-javascript-datatypes/102-typeof-operator.md
index a273c2ca3..3535dbb96 100644
--- a/src/data/roadmaps/javascript/content/102-javascript-datatypes/102-typeof-operator.md
+++ b/src/data/roadmaps/javascript/content/102-javascript-datatypes/102-typeof-operator.md
@@ -1,6 +1,6 @@
 # TypeOf Operator
 
-You can use the typeOf operator to find the data type of a JavaScript variable.
+You can use the typeOf operator to find the data type of a JavaScript variable. It returns a string indicating the type of provided operand's value.
 
 Visit the following resources to learn more: