Customizable Notifications With JavaScript – Alertify

Alertify is a lightweight JavaScript library for displaying stylish notifications with ease.

The library doesn’t depend on any JS frameworks, can show notifications in a modal window and also feature growl-like messages.

Alertify - JavaScript Notifications

Notifications are unobtrusive and the outputs can be completely customized via CSS as custom classes can be attached to elements.

Callbacks exist for ok + cancel events to act accordingly and there is support for chaining to create queued dialogs.