selectedIndex

• Description
• Syntax
• Examples
• Links

The selectedIndex of HTMLOptionsCollection for JS returns the index of the first selected item, if any, or −1 if there is no selected item.

Changes the selection to the option element at index index in collection.

collection.selectedIndex
collection.selectedIndex = index

The number of preceding siblings, or 0 if it has none.

• add
• item
• length
• namedItem
• remove

• Web Hypertext Application Technology Working Group (WHATWG)