feat: add default parameters

Author: ExploitEngineer

part5 (Functions)/AdvanceFunctions/07_default.parameters.js

@@ -0,0 +1,18 @@
+/*
+INFO: What are Default parameters ? 
+Default parameters allow you to assign default values to function parameters if no value (or undefined) is passed.
+*/
+
+// Syntax 
+function greet(name = "Guest") {
+  console.log(`Hello, ${name}!`);
+}
+greet();
+greet("Rafay");
+
+// Example 
+function sum(a = 2, b = a * 2) {
+  return a + b;
+}
+console.log(sum());
+console.log(sum(3));