Stately.js

A Finite-State Machine (FSM) is a logical computational model used in computer programming and application logic in which a machine cannot be in more than one state at one giver point in time.

A FSM is basically like an advanced conditional 'switch case' operation, but with more options and specifically targeted for modern JavaScript apps.

Stately.js works with client-side (browsers) and server-side (Node.js) environments.

Requirements:

• JavaScript enabled on client side
• Node.js 0.8 or higher (for server-side usage)