How to use the intersection Observer polyfill?

Question

Frontend

When optimizing a site for google pageSpeedInsight, you have to lazy load images (using the intersection Observer). But IE does not support this technology. I know that there is a polyfill that solves the compatibility problem, but I don't know how to use it in practice. That is, how and where to connect it and how. I would be grateful if someone could explain to the "teapot".

Answer 1

Yes, everything seems to be simple: https://github.com/w3c/IntersectionObserver/blob/m...
It can be done as jquery - I connected the script before all other scripts and that's it. If you use webpack, then they write through require to connect before all dependencies.