Documentation - WebSharper 3.x for F#

WebSharper.UI.Next

UI.Next is a client-side library providing a novel, pragmatic and convenient approach to UI reactivity. It includes:

  • A dataflow layer for expressing user inputs and values computed from them as time-varying values. This approach is related to Functional Reactive Programming (FRP), but differs from it in significant ways discussed here.
  • A reactive DOM library for displaying these time-varying values in a functional way. If you are familiar with Facebook React, then you will find some similarities with this approach: instead of explicitly inserting, modifying and removing DOM nodes, you return a value that represents a DOM tree based on inputs. The main difference is that these inputs are nodes of the dataflow layer, rather than a single state value associated with the component.
  • A declarative animation system for the DOM layer.

The tutorial goes over the basics of reactive variables and the DOM library.

For a more in-depth look, check the reference.

You can also check some examples here.

Availability

UI.Next is available for download on NuGet:

Documentation

These articles cover various design choices and aspects of the system:

  • Dataflow - explains the dataflow system
  • Leaks - explains how most memory leaks are avoided
  • Sharing - helps understanding sharing and identity
  • Monoids - explains use of monoids in the API
  • EventStreams - provides a rationale for omitting event stream combinators
  • FRP - discusses connections to Functional Reactive Programming
  • Components - gives simple component design guidelines
  • CML - discusses integrating Concurrent ML as a future direction
  • DOM on the server side - using the HTML combinators and templates on the server side

Talks