If a hash is detected in the URL, try to go to this hash once the IDs have been generated by the script.
Install from JahiaPublic Appstore, enable for your website, then find the component from the site components.
To add a table of content in your page, drad and drop the component whenever you want to display it. You can choose the tree depth from 1 (only first level) to 4, and also the starting heading (h1,h2,h3,h4)
If you don't want a table of content for all your table, use the "pin" icon and select the target you want to use. It can be any editorial component of any content list.