Prerequisite: Lua Task 6 - Tests. This task requires independent learning and is more difficult.
1 Examine https://en.wikipedia.org/wiki/Module:Sandbox/RexxS/GCI07
local num = tonumber(frame.args.num) or 2
uses a built-in Lua function called '"tonumber" which explicitly tries to convert its argument to a number. If it fails, then 2 is used instead as the value for "num".
Read through the function line-by-line and work out what each line does. The <br> is a html tag that creates a line-break, i.e. the display continues on the next line.
2 Examine https://en.wikipedia.org/wiki/User:RexxS/sandboxGCI#Lua_Task_7
This contains "test cases" for the function, which test how it behaves when given different possible inputs: nothing, blank, text, positive number, negative number.
3 Copy the function "times" into your module sandbox. Save it.
4 Edit "times" in your module sandbox so that the heading reads something like "2 times table". Save it. Test it in your sandbox. (Do that for each following instruction).
5 Edit "times" so that it displays "2 times 1 equals 2", etc.
6 Edit "times" so that it displays each table up to 12 times instead of 10 times.
7 Leave a comment here linking to your sandbox.