Who can help a noob please?

It's a syntax error. You're missing name after . operator. :^)

>>56456336
Yes I understand that it is a syntax error. I am stuck and do not fully understand the task.

Sorry I do not know what you mean by "You're missing name after . operator. :^)"

Line 2, you used a period instead of a comma.
My JavaScript is rusty, but I would also take a look at line 4, it doesn't look quite right.

Have fun!

>>56456272
I don't use JS, but shouldn't you use a comma "," between the arguments to the function?

>>56456431
maybe programming isn't for you

>>56456431
Get off this board pajeet.

Adding strings via '.' is a php thing. In JS you use '+'. The '.' is to access functions of a class, like you do with console DOT log.
You'e also missing an operator between 2 and 16 in the last line.

>>56456272
I don't use javascript nor have I programmed anything in years, but I don't think . is the concatenate operator in javascript, it's probably +