Re: [WICG/webcomponents] Addressable comments (a very small DOM parts subset) (Issue #1116)

noamr left a comment (WICG/webcomponents#1116)

> > current_content
> > <style marker=$lit3>current_styles</style>
> > ```
> > render(({v, c1, c2, content, styles}) => {
> >     const lit1 = app_root.querySelector("[marker=$lit1]");
> >     lit1.value = v;
> >     const lit2 = app_root.querySelector("[marker=$lit2]");
> >     lit2.setAttribute("class", `foo ${c1} ${c2}`);
> >     lit2.replaceChildren(content);
> >     const lit3 = app_root.querySelector("[marker=$lit3]");
> >     lit3.replaceChildren(styles);
> > });
> > ```
> 
> There is something missing in this example. From your code snippet, there's no indication of how the `marker` attributes track what part of the DOM should be updated. `marker="$lit1"` alone isn't enough information.

Right. In this example, that information is kept in the JS side of the library, or keep it in a `data-lit-*` attribute or whatever, or inside a comment node if that's what the library wants. What would be the value of the platform being opinionated about where that information is kept?


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