alex_oiste

Alex and Robert
 
Thanks for your responses....I had a look at the links and there were really useful.
 
Looks like I have a long journey ahead of me!
 
Regards
 
Ollie

Web workers are a way of running multi-threaded js applications in the browser environment. Normally JS runs on a single thread of execution, really unless you're building something huge then what you might gain from web workers is negligible. JavaScript on a modern machine can execute tens of millions of lines a second.
They are also pretty complex and definitely not something a beginner should be worried about at this stage.
 
The biggest performance bottleneck in JavaScript applications is the DOM API, things that cause repaints, style recalculation REALLY slow things down, if you want to research on improving JS performance look here first.

Thanks for the help, mate. I just turned my PC off, and when I turned it on, it said it had already downloaded it so all I had to do was install it. I like Windows 10.

It depends what your goals are there's plenty of examples of designer developers that are really good at what they do. If you want to get really, really deep into a particular area then it's best to specialise.
 
The important thing is what do you enjoy, if you enjoy both then there's no reason you cannot do both, if you prefer one of them then it's probably best to specialise in that one. A highly experienced specialist is likely to know more about their area of expertise than a general all-rounder. In large teams at big tech organisations there tends to be more opportunities for specialists as the stuff they are making is top of the line stuff, but I've no doubt that a very talented generalist can still get jobs at these sorts of places.
 
If you want to generalise more and get good at all areas then be aware that there's a huge mountain to climb and it will be a real challenge to keep up with the ever changing dev & design enviroments. But if you enjoy it, then it's doable.