The easiest way to try out rakudo.js is to try use 6pad If you load it in your browser you can run Raku code without installing anything.
To share or view example keep in mind 6pad can run gists. If you create a gist like https://gist.github.com/pmurias/b5d2414766e7a87969cb26a9e67a72a2 6pad will load the code you put in main.p6 if you pass it like https://perl6.github.io/6pad/#b5d2414766e7a87969cb26a9e67a72a2
If you type this into 6pad and press run you will receive a generic welcome from rakudo.js