PUBLIC MARKS with tags webperf & "lazy loading"

Given the potential limitations, let’s work on a solution that can handle all my concerns: a. works without JavaScript (i.e., lazy loading is an enhancement) b. vanilla js – no dependencies on jquery or angularjs c. works with broken JavaScript (i.e., the browser supports JavaScript, but there’s a js error somewhere which causes your script to break; might not even be your fault!)

While this article is about optimizations in AMP, it might also be useful as a kind of todo list for optimizing a non-AMP website.