[annise]

If this is about getting a job, forget about stacks and just start hacking on the first thing that seems interesting. If you're comfortable, you're doing it wrong.

Whatever you're working with will most likely be out of touch with what the job requires and outdated in a year, but the ability to pick up new things is an indefinitely transferable skill.

In addition to not bothering with stacks, I would also advise you not to limit yourself to JS.