//const body = document.body;

function findAncestor(el, cls){
    while ((el = el.parentElement) && !el.classList.contains(cls));
    return el;
}

// Event delegation. Body click, then check for buttons
body.addEventListener('click', (e) => {
	if(e.target.classList.contains('button-close')){
		let alertD = findAncestor(e.target, 'alert--dismissable');
		if (typeof(alertD) != 'undefined' && alertD != null){
			alertD.remove();
		}
	}
});