purescript-react's Introduction

purescript-react

Low-level React Bindings for PureScript.

For a more high-level set of bindings, you might like to look at purescript-thermite.

Module Documentation

Building

The library and example can be built with Pulp as follows:

pulp dep update
pulp build

pulp test -r cat > example/index.js
open example/index.html

Example

module Main where

import Prelude

import Control.Monad.Eff

import Data.Maybe.Unsafe (fromJust)
import Data.Nullable (toMaybe)

import DOM (DOM())
import DOM.HTML (window)
import DOM.HTML.Document (body)
import DOM.HTML.Types (htmlElementToElement)
import DOM.HTML.Window (document)

import DOM.Node.Types (Element())

import React

import qualified React.DOM as D
import qualified React.DOM.Props as P

incrementCounter ctx e = do
  val <- readState ctx
  writeState ctx (val + 1)

counter = createClass $ spec 0 \ctx -> do
  val <- readState ctx
  return $ D.p [ P.className "Counter"
               , P.onClick (incrementCounter ctx)
               ]
               [ D.text (show val)
               , D.text " Click me to increment!"
               ]

main = container >>= render ui
  where
  ui :: ReactElement
  ui = D.div [] [ createFactory counter {} ]

  container :: forall eff. Eff (dom :: DOM | eff) Element
  container = do
    win <- window
    doc <- document win
    elm <- fromJust <$> toMaybe <$> body doc
    return $ htmlElementToElement elm

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