2016 Performance Calendar Day 12: Defer > Async

In the web's maturation, page rendering speed has become a focus, and this is more than ever needed today beyond. In this struggle to gain every fraction of seconds, for the user, has been the javascript and it's execution time line. A the top of 2014, engineer Daniell Imms wrote about async vs defer in attempts to help with understanding page rendering in js speak. It was a post that I referred to and pointed many others to in the past.
For Day 12 of the Performance Calendar, the Pontiff of Performance Steve Souders shares why we should prefer defer as an attribute in our code. You can read the piece here.