First, what's a nice online javascript reference? I'm very new to JS (ie: moving from fixing things to writing things) and I keep googling for things as I need them and up at a bunch of crappy ...

Love it or loathe it, JSX has made a big impact on front-end engineering. Here's a code-first intro to the HTML-based JavaScript templating language. JSX is a way to write HTML inside of JavaScript, ...