Getting names of all properties of a instance?

If you either copy/paste into a script or perhaps use HTTPService to get the content of API:Class reference/Dump, you can parse the results and make the table of properties automatically.

If you use the copy/paste method, you'll want to put it into a script in this fashion:

input = [=[PASTE IT HERE]=]

The [=[ starts a string block that will not end until it gets to a ]=]. The reason to use that instead of "" is to allow for newlines.

I wrote the following parsing algorithm a while ago:

PropExists = {}
function copy(dict)
    local new = {}
    for k,v in pairs(dict) do
        new[k] = v
    end
    return new
end
local waitForNextClass = false
deprecated = {} --deprecated classes
for line in input:gmatch("[^\n]+") do
    if string.find(line, "%[deprecated%]") == nil then
        if line:sub(1, 1) ~= string.char(9) then
            waitForNextClass = false
            if string.find(line, ":") ~= nil then
                _, _, className, superClass = string.find(line, "Class ([%w_]+)%s:%s([%w_]+)")
                if deprecated[superClass] then
                    deprecated[className] = true
                    waitForNextClass = true
                else
                    curClass = copy(PropExists[superClass])
                end
            else
                _, _, className = string.find(line, "Class ([%w_]+)")
                curClass = {}
            end
            PropExists[className] = curClass
        elseif not waitForNextClass then
            _, _, name = string.find(line, "%s+[%w_]+%s+[%w_]+%s*[%w_]*.([%w_]+)")
            if name == nil then print(line) end
            curClass[name] = true
        end
    elseif line:sub(1, 1) ~= string.char(9) then
        waitForNextClass = true
        _, _, className = string.find(line, "Class ([%w_]+)")
        deprecated[className] = true
    end
end

return PropExists

Note that it expects its input variable to start with "Class Instance [notbrowsable]" (input must exist before line 1 above). It ignores deprecated entries. It is meant to be in a ModuleScript; it returns a dictionary which you might access like this:

PropExists[className][PropertyFieldEventOrFunctionName] == true or false

ex PropExists["Part"]["Position"] will be true.

Unfortunatly, you can't get all properties without having a table that contains every property of that instance. (Wich you'd have to make yourself)

If you'd want to print all properties of a instance, you'd first have to store all the properties that instance has, inside a table, then iterate through that table (using a for loop) and change the properties like that.