`GetZoneId`

ESO Lua API function — used by 215 of the 3,030 addons we indexed (combined 66,151,282 downloads). Signature from the official ESOUIDocumentation.txt, API version 101050.

Official signature

GetZoneId(luaindex zoneIndex)

Returns: integer zoneId

Real usage — from HarvestMap

		self:Warn("tried to save node in wrong zone: %d, %d, %s",
				GetZoneId(GetUnitZoneIndex("player")), mapMetaData.zoneId, mapMetaData.map)
		return

Short excerpt from the shipping addon HarvestMap — its ESOUI page; the code belongs to its author. Shown because documentation without a working example is half a reference.

Most-downloaded addons using it

Addon	Total downloads
HarvestMap	9,454,533
Destinations	8,211,449
Map Pins	8,061,548
LibMapPins	5,838,255
Code's Combat Alerts	4,445,158
LibGPS	4,027,526