API GetQuestLogLeaderBoard

This function returns up to 3 values:

local desc, type, done = GetQuestLogLeaderBoard(i, [questID])

Arguments

i 

Index of the quests objective (see GetNumQuestLeaderBoards() ).

questID 

Identifier of the quest in the quest log. If not provided, default to the currently selected Quest, via SelectQuestLogEntry().

Return values

desc 

String - The text description of the objective, like: "Kill foo: 0/3"

type 

String - could be the following things: "item", "object", "monster", "reputation", "log", or "event".

done 

Boolean - nil if this sub objective is not completed yet, else 1

Useful examples

function GetLeaderBoardDetails (boardIndex,questIndex)
  local leaderboardTxt, itemType, isDone = GetQuestLogLeaderBoard (boardIndex,questIndex);
  local i, j, itemName, numItems, numNeeded = string.find(leaderboardTxt, "(.*):%s*([%d]+)%s*/%s*([%d]+)");
  return itemType, itemName, numItems, numNeeded, isDone;
end
-- returns eg. "monster", "Young Nightsaber slain", 1, 7, nil

Notes

The type "player" was added in WotLK, which is used by Template:Questlong and probably other quests.

The type "log" was added sometime around patch 3.3.0, and seems to have replaced many instances of "event".

Only ever found one quest, Template:Quest that had an "object" objective.

The "desc" returnvalue can be incomplete under some (unknown) circumstances containing an empty string or just says "slain" instead the real objective text.