Completed part three

Author: SyedAlvi22

arrays/exercises/part-three-arrays.js

@@ -1,9 +1,16 @@
 let cargoHold = [1138, 'space suits', 'parrot', 'instruction manual', 'meal packs', 'space tether', '20 meters'];
 
-//Use splice to make the following changes to the cargoHold array. Be sure to print the array after each step to confirm your updates.
+// 1) Insert the string 'keys' at index 3 without replacing any other entries.
+cargoHold.splice(3, 0, 'keys');
+console.log(cargoHold); // [1138, 'space suits', 'parrot', 'keys', 'instruction manual', 'meal packs', 'space tether', '20 meters']
 
-//1) Insert the string 'keys' at index 3 without replacing any other entries.
+// 2) Remove ‘instruction manual’ from the array. (Hint: indexOf is helpful to avoid manually counting an index).
+let indexToRemove = cargoHold.indexOf('instruction manual');
+if (indexToRemove !== -1) {
+    cargoHold.splice(indexToRemove, 1);
+}
+console.log(cargoHold); // [1138, 'space suits', 'parrot', 'keys', 'meal packs', 'space tether', '20 meters']
 
-//2) Remove ‘instruction manual’ from the array. (Hint: indexOf is helpful to avoid manually counting an index).
-
-//3) Replace the elements at indexes 2 - 4 with the items ‘cat’, ‘fob’, and ‘string cheese’.
+// 3) Replace the elements at indexes 2 - 4 with the items ‘cat’, ‘fob’, and ‘string cheese’.
+cargoHold.splice(2, 3, 'cat', 'fob', 'string cheese');
+console.log(cargoHold); // [1138, 'space suits', 'cat', 'fob', 'string cheese', 'space tether', '20 meters']