UI-Router Core  Build Status

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UI-Router core provides client-side Single Page Application routing for JavaScript. This core is framework agnostic. It is used to build UI-Router for Angular 1, UI-Router for Angular 2, and UI-Router React.

SPA Routing

Routing frameworks for SPAs update the browser's URL as the user navigates through the app. Conversely, this allows changes to the browser's URL to drive navigation through the app, thus allowing the user to create a bookmark to a location deep within the SPA.

UI-Router applications are modeled as a hierarchical tree of states. UI-Router provides a state machine to manage the transitions between those application states in a transaction-like manner.


UI-Router Core provides the following features:

  • State-machine based routing
    • Hierarchical states
    • Enter/Exit hooks
  • Name based hierarchical state addressing
    • Absolute, e.g., admin.users
    • Relative, e.g., .users
  • Flexible Views
    • Nested Views
    • Multiple Named Views
  • Flexible URLs and parameters
    • Path, Query, and non-URL parameters
    • Typed parameters
      • Built in: int, string, date, json
      • Custom: define your own encoding/decoding
    • Optional or required parameters
    • Default parameter values (optionally squashed from URL)
  • Transaction-like state transitions
    • Transition Lifecycle Hooks
    • First class async support

Get Started

Get started using one of the existing UI-Router projects:

Build your own

UI-Router core can be used implement a router for any web-based component framework. There are four basic things to build for a specific component framework:


A UIView is a component which acts as a viewport for another component, defined by a state. When the state is activated, the UIView should render the state's component.

UISref (optional, but useful)

A UISref is a link (absolute, or relative) which activates a specific state and/or parameters. When the UISref is clicked, it should initiate a transition to the linked state.

UISrefActive (optional)

When combined with a UISref, a UISrefActive toggles a CSS class on/off when its UISref is active/inactive.

Bootstrap mechanism (optional)

Implement framework specific bootstrap requirements, if any. For example, UI-Router for Angular 1 and Angular 2 integrates with the ng1/ng2 Dependency Injection lifecycles. On the other hand, UI-Router for React uses a simple JavaScript based bootstrap, i.e., new UIRouterReact().start();.

Getting help

Create an issue or contact us on Gitter.

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