remove.js

var ids = $('#access-section-read-write .usercard').map(function () { return /\d+/.exec(this.id); }).toArray()

function remove (userId, cb) {
	$.post('/rooms/setuseraccess/17', fkey({
		aclUserId : userId,
		userAccess : 'remove'
	})).always(cb);
}

(function step (ids) {
	if (!ids.length) {
		console.log('done');
		return;
	}
	
	var id = ids.pop();
	remove(id, finish);

	function finish (xhr) {
		if (xhr.statusCode !== 200) {
			console.error(xhr.statusText);
			console.log(xhr);
		}
		
		setTimeout(function () {
			step(ids);
		}, 500);
	}
})(ids);