core.cljs

(ns react-cljs.core
  (:require React))

(declare render)

(defn handle-change [e]
  (render {:text (.. e -target -value)}))

(defn render [{:keys [text]}]
  (React/renderComponent
    (React/DOM.div nil
      (array
        (React/DOM.h1 nil "Type some stuff in the text box")
        (React/DOM.input
          (js-obj
            "type" "text"
            "value" text
            "onChange" handle-change))
        text))
    js/document.body))

(render {:text ""})

;;  -- Oh the beautiful DSLs that await us! --
;;
;;  (render-component
;;    (div nil
;;      [(h1 nil "type some stuff here")
;;       (input :type "text" :value text :change handle-change)
;;       text])
;;    js/document.body)

project.clj

(defproject react-cljs "0.1.0-SNAPSHOT"
  :description "FIXME: write this!"
  :url "http://example.com/FIXME"

  :dependencies [[org.clojure/clojure "1.5.1"]
                 [org.clojure/clojurescript "0.0-2080"]
                 [reactjs "0.5.1"]]

  :plugins [[lein-cljsbuild "1.0.0"]]

  :source-paths ["src"]

  :cljsbuild { 
    :builds [{:id "dev"
              :source-paths ["src"]
              :compiler {
                :output-to "main.js"
                :output-dir "out"
                :optimizations :none
                :source-map true
                :foreign-libs [{:file "reactjs/react.js"
                                :provides ["React"]}]
                :externs ["reactjs/externs/react.js"]}}]})

@piranha are there many external React libraries? Or do you mean that components created in ClojureScript will need componentDidMount, componentWillUnmount in order to be used by others? To be honest this seems unlikely given ClojureScript's whole program compilation model.

Interesting point about props, I didn't realize this was compared - do you have a link to the documentation and/or source about this optimization?

@swannodette by "external libraries" I mean absolutely separate external libraries, i.e. jQuery, various date pickers and calendars, d3 and so on.

Regarding optimizations, something like that.

Is there a way to suppress the warnings of React.js? I'm getting 268 warnings about JSDoc tags. I can't find the real warnings about my code (like undefined variables).

@ericnormand, this is fixed in master, your release build should look something like this to suppress warnings:

{:id "release"
 :source-paths ["src"]
 :compiler
 {:output-to "main.js"
  :optimizations :advanced
  :pretty-print false
  :foreign-libs [{:file "reactjs/react.js"
                  :provides ["React"]}]
  :externs ["reactjs/externs/react.js"]
  :closure-warnings {:non-standard-jsdoc :off}}}

After chatting with the React devs some more, there are definitely some improvements to my approach in the counter Gist, will keep exploring and post updates when I discover something new.

@swannodette, in case you weren't aware, Conrad Barski (webfui) has made a few comments on the React mailing list: https://groups.google.com/forum/#!topic/reactjs/e3bYersyd64

Hi I see that you use React, so I am sure that you will find interesting the https://reactjs.co - this is the free online convention and tutorial book for React.JS Developers. React is not only the View (in MVC) anymore. ReactJS For Dummies: Why & How to Learn React Redux, the Right Way.