User Interactions

• Clicking toggles the open/closed state of the menu
• Menu sizes to reasonable default height, scroll to handle large numbers of items
• Menu must position itself to bottom-left corner of dropdown when open
• Support keyboard accessibility (space-bar to open; arrow up/down, page up/down, home/end keys to navigate through options, spacebar or enter to select, esc to dismiss, mousewheel)

Developer Options

• Supply array of items for display
• Allow for a default selection
• Customize display of items with any text desired
  • Stretch goal: allow for custom React component to be used
• Handlers for onChange