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module Main exposing (..) |
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-- Press buttons to increment and decrement a counter. |
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-- |
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-- Read how it works: |
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-- https://guide.elm-lang.org/architecture/buttons.html |
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-- |
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import Browser |
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import Html exposing (Html, button, div, text) |
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import Html.Events exposing (onClick) |
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-- MAIN |
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main = |
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Browser.sandbox { init = init, update = update, view = view } |
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-- MODEL |
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type alias Model = Int |
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init : Model |
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init = |
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0 |
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-- UPDATE |
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type Msg |
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= Increment |
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| Decrement |
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update : Msg -> Model -> Model |
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update msg model = |
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case msg of |
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Increment -> |
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model + 1 |
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Decrement -> |
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model - 1 |
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-- VIEW |
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view : Model -> Html Msg |
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view model = |
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div [] |
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[ button [ onClick Decrement ] [ text "-" ] |
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, div [] [ text (String.fromInt model) ] |
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, button [ onClick Increment ] [ text "+" ] |
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] |
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-- From https://elm-lang.org/examples/buttons |
