greggirwin

; We have other reflective functions (words-of, body-of, etc.), but
; this is a little higher level, sounded fun to do, and may prove
; useful as we write more Red tools. It also shows how to make your
; own typesets and use them when parsing.

arity-of: function [
	"Returns the fixed-part arity of a function spec"
	spec [any-function! block!]
	/with refs [refinement! block!] "Count one or more refinements, and add their arity"
][

pbojinov

Two way iframe communication

The main difference between the two pages is the method of sending messages. Recieving messages is the same in both.

Parent

Send messages to iframe using iframeEl.contentWindow.postMessage Recieve messages using window.addEventListener('message')

iframe