"Advanced topics"

[gbj]

It would be useful to have a section at the end that just links to the main docs/points out the existence of a few advanced topics: :undelegated for opting out of event delegation is one example that's come up, and I know there are other things that are difficult to discover in the main docs if you don't already know they exist, but also aren't covered in the book.

[diversable]

thanks for pointing this out - if anyone thinks of other things that should be described in this new section of the book - "Part 3: Advanced Topics" - please comment below and I'll add them to the list in this comment.

If there's anything in the other large tracking issue, about getting the book caught up with other Leptos features, which should go into this new book section, please comment below and I'll update the 2 lists accordingly - thx!

Pt 3: Advanced Topics

• describe :undelegated which opts out from event delegation
• ...

[blorbb]

do you think working with web_sys and js_sys (#22) and use: directives (kinda related: leptos-rs/leptos#2248) should be in the advanced section?

Maybe there could be a sub-section on advanced view! features, like :undelegated and #[slot]s alongside use:.