How can I access variables from theme in child theme? [closed]

You would access it the same way that Kalium does. Code in child and parent themes all have access to the same things, there is no sandboxing or walls of separation dividing the two. Any functions or variables in the parent theme are accessible in the child theme the same way they’d be in the parent.

Having said that, overriding PHP functions and classes in the parent theme may not be possible if they don’t provide actions and filters, and can’t be unhooked.

Similarly, javascript is javascript, once it’s loaded into the browser page, it has very little to do with WordPress and parent/child themes. You’ll probably have to deregister the parent themes javascript and then add your own that does everything the parent theme does, but your way.

Fundamentally, the only people who can definitively answer your question are the Kalium support routes, and other people who use Kalium.