ESO Event Tutorial

--Register for our event
--this event has one return, the name of the addon that loaded, causing the event to fire
--but an event handler (what you are doing right here, assigning a function to an event) will always return what event fired FIRST
EVENT_MANAGER:RegisterForEvent("MyAddon", EVENT_ADD_ON_LOADED, function(event, addon)   --this function continues on the next few lines
        if addon == "MyAddon" then  --if the addon return matches the name of our addon
            DoSomething()   --then do whatever you want when it happens
        end
    end)    --this is now the end of the function and the end of the event handler


--You can also do this by passing a pre-defined event to the event handler, rather than creating an anonymous one
--When you do this, you can assign multiple events to the same function
--Let's define our function first --> don't forget that the event code comes first from our event handler!!
local function MyFunction(event, arg1)
    if event == EVENT_ADD_ON_LOADED then    --if it was our addon loading
        DoSomething()   --do what you want to at load
    else    --if it was our character loading into the world
        d("Hello World!")   --do something else
    end
end

--now that our function is defined, we can register for our events and pass that function to the event handler
EVENT_MANAGER:RegisterForEvent("MyAddon", EVENT_ADD_ON_LOADED, MyFunction)  --the args/returns get passed into our function automatically
EVENT_MANAGER:RegisterForEvent("MyAddon", EVENT_PLAYER_READY, MyFunction)