feat: add function expression

Author: ExploitEngineer

part5 (Functions)/AdvanceFunctions/02_function.expression.js

@@ -0,0 +1,15 @@
+/*
+INFO: What is a Function Expression ?
+A function expression is when you assign a function to a variable. Unlike fucntion declarations, function expressions are not hoisted, and the function can be anonymous or named.
+*/
+
+// Syntax 
+const variableName = function(parameters) {
+  console.log("functiontion epxression");
+};
+
+// Example 
+const greet = function(name) {
+  console.log(`Hello ${name}!`);
+};
+greet("Rafay");