Hey!
Ok, so put this in "lay options" -> "custom css & html" -> "Custom <head> content"
<script>
window.laytheme.on("newpageshown", function(layoutObj, type, obj){
console.log(obj)
});
</script>
Go to the page where you want to run your javascript and open the console:
https://developers.google.com/web/tools/chrome-devtools/console/#opening_the_console
You will see a js object like that:
[image: 1499868878687-screen-shot-2017-07-12-at-16.14.05-resized.png]
So in my example I can say
<script>
window.laytheme.on("newpageshown", function(layoutObj, type, obj){
if(obj.slug == "test-2"){
//do javascript here
}
});
</script>
Ok this is just to execute javascript for specific pages. I'm really not sure if that will make it work with processing. Have you tried this processing js too? http://processingjs.org/learning/
