Update If_else.js

Javascript/If_else.js

@@ -1,5 +1,5 @@
-let firstName = "Ashu";
-let gender = "Male";
+const firstName = "Ashu"; //The firstname and gender of a person is fixed(constant) ie it cannot change so its much better to use the const variable as it then wont allow the variable value to be reassigned.
+const gender = "Male";
 if (gender == "Male") {
     console.log("Hello, " + firstName);
-}
+}