Riot brings custom tags to all browsers, including IE8. Think React + Polymer but with enjoyable syntax and a small learning curve.

<timer>

  <p>Seconds Elapsed: { time }</p>

  this.time = opts.start || 0

  tick() {
    this.update({ time: ++this.time })
  }

  var timer = setInterval(this.tick, 1000)

  this.on('unmount', function() {
    clearInterval(timer)
  })

</timer>

Open this example on Plunker

riot.mount('timer', { start: 0 })

Custom tags lets you build complex views with HTML.

<timetable>
  <timer start="0"></timer>
  <timer start="10"></timer>
  <timer start="20"></timer>
</timetable>

HTML syntax is the de facto language on the web and it's designed for building user interfaces. The syntax is explicit, nesting is inherent to the language and attributes offer a clean way to provide options for custom tags.

• Absolutely the smallest possible amount of DOM updates and reflows.
• One way data flow: updates and unmounts are propagated downwards from parent to children.
• Expressions are pre-compiled and cached for high performance.
• Lifecycle events for more control.

• No proprietary event system.
• Event normalization for IE8.
• The rendered DOM can be freely manipulated with other tools.
• No extra HTML root elements or data- attributes.
• Plays well with jQuery.

• Create tags with CoffeeScript, Jade, LiveScript, Typescript, ES6 or any pre-processor you want.
• Integrate with NPM, CommonJS, AMD, Bower or Component
• Develop with Gulp, Grunt, Browserify, or Wintersmith plugins

• jsDelivr
• cdnjs

• Power shortcuts: class={ enabled: is_enabled, hidden: hasErrors() }.
• No extra brain load such as render, state, constructor or shouldComponentUpdate
• Interpolation: Add #{ items.length + 1 } or class="item { selected: flag }"
• Compact ES6 method syntax.

• Riot Examples - Community's Official
• Riot Todo MVC
• Hackernews reader
• Vuejs examples by Riotjs
• Flux-like ES6 Todo
• Simple TODO
• Timer
• Another flux demo comparable to React ones
• Various experiments
• Isomorphic application
• Isomorphic proof of concept
• flux-riot todo
• Another Riot Todo MVC
• Cheft isomorphic by express

• Building Apps with Riot, ES6 and Webpack
• Building Apps with Riot, Babel, RiotControl and Webpack
• Building tabs with Riot
• The "React tutorial" for Riot
• How to package "tag libraries" in Riot
• Another React tutorial with Riot
• Riot Custom Tag by Example
• Riot Compiler Explained
• Adding compiled Riot tags to your Gulp + Browserify build
• The anatomy of a tag - a primer tutorial

• Introduction
• Loops, Events and Callbacks
• Server Rendering with Node & Express

• Flux- like event controller for Riot
• flux-riot framework
• Cheftjs - chinese framework for Riot
• Veronica - flux adaption for Riot

• Material UI
• RiotGear
• Riot Bootstrap
• iToolkit
• Riot Routehandler-(Demo)
• Riot Grid - (Demo)
• ESLint Riot Plugin
• riot-animate

• Riot + AngularJS
• Module loader for WebPack
• Riot + Meteor
• Riot Snake Game
• Riot Tag Syntax Checker
• Riot 文档中译版 🇨🇳
• Riot + Wintersmith
• Riot precompiler plugin for lineman
• Riot Startkit - Flux inspired skeleton app + WebPack + PostCSS
• Yeoman generator - Generator riot mobile
• Yeoman generator - Generator riot element
• Riot for TypeScript
• Sublime Syntax Highlighting for Riot Tag Files
• Riot loader plugin for RequireJS
• Riot loader plugin for JSPM/SystemJS

• Riot vs React performance: (Riot version) vs (React version)

• Q&A with RiotJS author Tero Piirainen
• riot-detector (Chrome Extension)
• riot (Atom Package)

Riot is made with ❤️ by many smart people from all over the world. Thanks to all the contributors
It's actively maintained by:

• Richard Bondi
• Gianluca Guarini
• Tsutomu Kawamura
• Alberto Martínez
• Tero Piirainen

https://riotjs.com/