A couple weeks ago, Martin Splitt from Google announced on Twitter that he and Lizzi Harvey from Google posted a new developer document on the basics of JavaScript and SEO. The guide describes how Google Search processes JavaScript and the best practices for improving JavaScript web apps for Google Search.

The document is broken into these sections:

How Googlebot processes JavaScript

How to describe your page with unique titles and snippets

How to write compatible code

When to use HTTP status codes

How to use meta robots tags

How to fix images and lazy-loaded content

One note from the SEO community:

Most interesting sentence in Google's new JavaScript SEO documentation. As suspected, nofollowed links are entirely ignored by Google. People who believe nofollowed links impact rankings are, imho, commiting the classic correlation/causation fallacy. pic.twitter.com/icM4jy5uYy — Barry Adams (@badams) July 19, 2019

Forum discussion at Twitter.