Dynamic Game Selector

Instructions

1. Create a JavaScript array of video game categories (at least 3).
2. Populate the dropdown dynamically using the array.
3. Add a default option labeled Select a Game Category.
4. When a category is selected:
   • Show the matching content section.
   • Hide all other content sections.
   • Note: Newly added categories will appear in the dropdown, but you do not need to create a corresponding content section for them in this assignment.
5. Add functionality to:
   • Enter a new category name
   • Dynamically add it to the dropdown when a button is clicked
   • Validate that a category is filled in.
   • Validate that a duplicate category is not being entered