Created
October 13, 2021 06:50
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Avoiding unsafe
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module Main where | |
import Prelude | |
import Data.Maybe (Maybe, maybe) | |
import Data.Traversable (traverse) | |
import Debug (spy) | |
import Effect (Effect) | |
import Effect.Exception (throw) | |
import Web.DOM.Element (getAttribute, toNode) | |
import Web.DOM.Element as Element | |
import Web.DOM.Node (parentElement) | |
import Web.DOM.NodeList as NodeList | |
import Web.DOM.ParentNode (QuerySelector(..), querySelector, querySelectorAll) | |
import Web.HTML (window) | |
import Web.HTML.HTMLDocument as HTMLDocument | |
import Web.HTML.Window (document) | |
mob :: forall a. Effect (Maybe a) -> Effect a | |
mob e = e >>= maybe (throw "Could not get element") pure | |
mob' :: forall a. Maybe a -> Effect a | |
mob' e = mob (pure e) | |
main :: Effect Unit | |
main = do | |
datas <- | |
window | |
>>= document | |
<#> HTMLDocument.toParentNode | |
>>= (querySelectorAll $ QuerySelector "[data-kategoria]") | |
>>= NodeList.toArray | |
>>= traverse \e -> do | |
cellElement <- | |
e | |
# parentElement | |
# mob | |
<#> toNode | |
>>= parentElement | |
# mob | |
<#> toNode | |
>>= parentElement | |
# mob | |
<#> Element.toParentNode | |
ado | |
textElement <- | |
cellElement | |
# (querySelector $ QuerySelector ".food-etlap-szoveg") | |
# mob | |
kategoria <- | |
e | |
# Element.fromNode | |
# mob' | |
>>= getAttribute "data-kategoria" | |
# mob | |
datum <- | |
e | |
# Element.fromNode | |
# mob' | |
>>= getAttribute "data-datum" | |
# mob | |
ar <- | |
cellElement | |
# (querySelector $ QuerySelector ".price") | |
# mob | |
<#> Element.toParentNode | |
>>= (querySelector $ QuerySelector ".center") | |
# mob | |
in { textElement, kategoria, datum, ar } | |
let | |
_ = spy "" datas | |
pure unit |
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