ideas.md

Some way to do conditionals in chains, e.g.

	e::div()
		.add_child_if(condition, move || e::div().text("this only sometimes"))

On-click once

rather than

	element.add_on_click(move |_| {
		run_some_fn_taking_ownership(owned_string.clone(), some_struct.clone());
	});

do this

	element.add_on_click_once(move |_| {
		run_some_fn_taking_ownership(owned_string, some_struct);
	});

Should be possible by using Closure::once_into_js and also having special handlers that are also dropped as soon as the fn is called. Useful for stuff like buttons that do work and delete element, buttons that navigate to different pages, etc.