Provide a way to update arbitrary properties

[Fresheyeball]

Consider a scenario where we wish to update the scrollTop property on a Node. At the moment, I have to do this with ports and hack around querying because there is no post render hook. Its not ideal given that the data being sent is simple view logic, and views cannot issues Cmd. As it stands Attribute works well for properties exposed as attributes in the Html api, but it could as well update any arbitrary property.

Proposition for this use-case

import Html.Attributes as Attr

container at = div [ Attr.class "container", Attr.scrollTop "300px" ] [ text "wowzers" ]

Since the raw attribute function takes 2 strings, it could be possible to update any arbitrary property via 'stringly typed match'.

[process-bot]

Thanks for the issue! Make sure it satisfies this checklist. My human colleagues will appreciate it!

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[process-bot]

Thanks for the issue! Make sure it satisfies this checklist. My human colleagues will appreciate it!

Here is what to expect next, and if anyone wants to comment, keep these things in mind.

[lukewestby]

Html.Attributes.property will do this if you want

Html.Attributes.property "scrollTop" (Json.Encode.int 300)

You would just need to be careful with things like scrollTop on the first render since nothing will be in the DOM and setting scrollTop doesn't have any effect until the element is actually inserted.

[lukewestby]

Html.Attributes.property will do this if you want

Html.Attributes.property "scrollTop" (Json.Encode.int 300)

You would just need to be careful with things like scrollTop on the first render since nothing will be in the DOM and setting scrollTop doesn't have any effect until the element is actually inserted.

[Fresheyeball]

Damn, how the heck did I miss that.

[Fresheyeball]

Damn, how the heck did I miss that.

[lukewestby]

I forget about it all the time too, it doesn't come up super often since the built-in attribute stuff covers most use cases 😃

[lukewestby]

I forget about it all the time too, it doesn't come up super often since the built-in attribute stuff covers most use cases 😃

[evancz]

Should be done with this instead though.

[evancz]

Should be done with this instead though.

[Fresheyeball]

Dom querying really?
On Mon, Sep 19, 2016 at 5:52 PM Evan Czaplicki notifications@github.com
wrote:

Should be done with this
http://package.elm-lang.org/packages/elm-lang/dom/1.1.0/Dom-Scroll#toY
instead though.

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[Fresheyeball]

Dom querying really?
On Mon, Sep 19, 2016 at 5:52 PM Evan Czaplicki notifications@github.com
wrote:

Should be done with this
http://package.elm-lang.org/packages/elm-lang/dom/1.1.0/Dom-Scroll#toY
instead though.

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