My JavaScript book is out! Don't miss the opportunity to upgrade your beginner or average dev skills. .@rauschma note cover of most recent draft. We hope the year-based branding will catch on in prep for annual updates pic.twitter.com/stWqa6ArTl — Allen Wirfs-Brock (@awbjs) January 22, 2015 ECMAScript 2015, aka ES6 For those who don't know yet, ECMAScript, also known as ES, is the specification th