Is "on start of layout" equivalent to window.onload or any guess ?
Have tried looking at exported html but couldn't find one.
No - the loader starts in DOMContentLoaded, and then it waits for all the images/sounds to download, then it fires 'On start of layout'. It shouldn't matter anyway, why do you need to know?
Develop games in your browser. Powerful, performant & highly capable.
I was thinking to make plugin for realtime.co, I saw it loads on window.onload event. But looks like either I have to inject in plugin or make dependency on some html file where it will load this.