This tiny application is meant to provide a quick start of the basics of re-frame.

A detailed source code walk-through is provided in the docs: https://day8.github.io/re-frame/dominoes-live/

All the code is in one namespace: /src/simple/core.cljs.

Steps:

1. install Clojure
2. git clone https://github.com/day8/re-frame.git
3. cd re-frame/examples/simple
4. Run "lein do clean, shadow watch client" to compile the app and start up shadow-cljs hot-reloading
5. Wait for the compile to finish. At a minumum, 15 seconds. But, if you are new to ClojureScript and some downloads are needed (caches are empty), it might take a minute or two. Eventually you should see [:client] Build Completed (...)
6. Open http://localhost:8280/example.html to see the app

So, what just happened?

The ClojureScript code under /src has been compiled into javascript and put into /resources/public/js/client.js which is loaded into /resources/public/example.html (the HTML file you just opened in the browser)

Shadow-cljs (the compiler) provides for hot-reloading, which means you can edit the source code and immediately see the change in the browser. To test this, I'd suggest that you edit ./src/simple/core.cljs, search for the string "Hello world, it is now", change it to something else, save the file, then watch your change show up in the browser in near-realtime.

Run "lein do clean, shadow release client" to compile an optimised version, and then open resources/public/example.html in a browser.