diff --git a/content/roadmaps/106-javascript/content/109-javascript-functions/101-function-parameters/readme.md b/content/roadmaps/106-javascript/content/109-javascript-functions/101-function-parameters/readme.md
index 31509c110..f2db1b6c8 100644
--- a/content/roadmaps/106-javascript/content/109-javascript-functions/101-function-parameters/readme.md
+++ b/content/roadmaps/106-javascript/content/109-javascript-functions/101-function-parameters/readme.md
@@ -1 +1,6 @@
-# Function parameters
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+# Function Parameters
+
+The parameter is the name given to the variable declared inside the definition of a function. There are two special kinds of syntax: default and rest parameters.
+
+<BadgeLink colorScheme="yellow" badgeText="Read" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Functions#function_parameters">Function Parameters</BadgeLink>
+
diff --git a/content/roadmaps/106-javascript/content/109-javascript-functions/102-arrow-functions.md b/content/roadmaps/106-javascript/content/109-javascript-functions/102-arrow-functions.md
index 39affa173..303e30217 100644
--- a/content/roadmaps/106-javascript/content/109-javascript-functions/102-arrow-functions.md
+++ b/content/roadmaps/106-javascript/content/109-javascript-functions/102-arrow-functions.md
@@ -1 +1,5 @@
-# Arrow functions
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+# Arrow Functions
+
+Arrow Function is a new way of creating functions with the '=>' operator with a shorter syntax.
+
+<BadgeLink colorScheme="yellow" badgeText="Read" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions">Arrow function expressions</BadgeLink>
diff --git a/content/roadmaps/106-javascript/content/109-javascript-functions/103-iifes.md b/content/roadmaps/106-javascript/content/109-javascript-functions/103-iifes.md
index 464769c16..56c43f885 100644
--- a/content/roadmaps/106-javascript/content/109-javascript-functions/103-iifes.md
+++ b/content/roadmaps/106-javascript/content/109-javascript-functions/103-iifes.md
@@ -1 +1,5 @@
-# Iifes
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+# IIFE
+
+Immediately-Invoked Function Expression is a function that is executed immediately after it is created.
+
+<BadgeLink colorScheme="yellow" badgeText="Read" href="https://developer.mozilla.org/en-US/docs/Glossary/IIFE">IIFE — MDN Docs</BadgeLink>
diff --git a/content/roadmaps/106-javascript/content/109-javascript-functions/readme.md b/content/roadmaps/106-javascript/content/109-javascript-functions/readme.md
index e0c425f3e..9c16546dd 100644
--- a/content/roadmaps/106-javascript/content/109-javascript-functions/readme.md
+++ b/content/roadmaps/106-javascript/content/109-javascript-functions/readme.md
@@ -1 +1,5 @@
-# Javascript functions
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+# Functions
+
+Functions are blocks of code that execute whenever they are invoked. They are useful for placing code snippets executed in different places in the code.
+
+<BadgeLink colorScheme="yellow" badgeText="Read" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Functions">Functions - MDN Docs</BadgeLink>