Html.none would produce a virtual DOM node but that node would not produce
anything in the actual DOM. It's usage is an alternative to list concatenation
and empty divs. For example:
div []
[ headerView model,
, model.error |> Maybe.map errorBoxView |> Maybe.withDefault Html.none
, bodyView model
]
Now, when diffing the virtual DOM, the header, optional error box, and body are
always at the same indices within the div but we haven't cluttered the real DOM
with empty nodes.
Mark
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