Add back/forward browser feature to TOC links

[Jos512]

When I click on the links in the TOC of an article, it doesn't update the browser URL. That means I can't quickly jump back and forth in the document with the browser's previous and next feature.

(Duplicate of: https://discourse.gohugo.io/t/new-docs-site-released/7470/3?u=jura)

[budparr]

@rdwatters Going to take up our previous conversation here. Can you send me, or point me to the script you were using before? Sounds like it might fit our needs, or at least worth considering.

[ghost]

Here's an example of Hugo with smooth scroll in a TOC:
https://hackcabin.com/post/become-digital-nomad-bali/

Implementation in After Dark theme:
https://github.com/comfusion/after-dark

And if you want to really step it up for docs add AnchorJS like this:
https://habd.as/zero-to-http-2-aws-hugo/

[rdwatters]

@budparr Sorry for the delay. I believe this is part of it, but keep in mind I was using JQ and a lot of spaghetti code, so I worry this is going to do you very little good:

1. https://github.com/rdwatters/hugo-docs-concept/blob/960790b6a233f30009e4053178bf0fd50bda705e/themes/hugo-docs-concept/pipeline/js/scripts/smooth-scrolling.js
2. https://github.com/rdwatters/hugo-docs-concept/blob/960790b6a233f30009e4053178bf0fd50bda705e/themes/hugo-docs-concept/pipeline/js/scripts/toc.js