Unfortunately, yes it is; Most of the front end developers I've worked with never seem to bother actually learning the language they write in, they just copy and paste their way to victory.
Realistically speaking, you'll want to invest more than a week of your time to get a job. While you could learn some syntax, you'll probably be of little help to a team with just that. You'll need to be able to understand, not just regurtiate information. I'd recommend at least building a couple of things on your own and evaluating them first, so you have an opportunity to gain some more understanding.