Programming language: JavaScript
License: MIT License
Latest version: v1.0.0-alpha.0

reactive-elements alternatives and similar libraries

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Note! The docs here are for the v1.0.0 alpha. This is not ready for production use yet.

You should use this README, which refers to 0.10.0, the latest stable version on npm: https://github.com/PixelsCommander/ReactiveElements/blob/7cce3d7b472989878ac1433cec0e8168fd4136aa/README.md

Convert React.js components into Web Components

npm install reactive-elements
yarn add reactive-elements

How to use?

Directly in a browser

Placing component in a pure HTML

    <my-react-component items="{window.someArray}"></my-react-component>

React class definition

/* @jsx React.DOM */
MyComponent = React.createClass({
  render: function() {
    console.log(this.props.items); // passed as HTML tag`s argument
    console.log(this.props.children); // original tag children
    return (
        <li>React content</li>

ReactiveElements('my-react-component', MyComponent);

With Bundler

import React, { Component } from 'react';
import ReactiveElements from 'reactive-elements';

class Welcome extends Component {
  render() {
    return <h1>Hello, {this.props.name}</h1>;

ReactiveElements('welcome-component', Welcome);


Original children of a custom element is injected to component as this.props.children.

<my-react-component>Hello world</my-react-component>

In this case this.props.children is equal to "Hello world".

Container node of the element is passed as this.props.container. Both props.container and props.children have type of documentFragment.

Boolean attribute transforms (added in version 0.7.0)

An attribute that has the value "true" or "false" will be converted into the boolean true or false when given to the React component:

<my-react-component is-logged-in="true">Hello world</my-react-component>

Here, this.props.isLoggedIn === true within the React component.

If you don't want this behaviour you can disable it with a special attribute:

<my-react-component is-logged-in="true" reactive-elements-no-boolean-transform>Hello world</my-react-component>

Exposing components methods on custom element

If you want to expose React component methods on custom element - assign them to component as following:

componentDidMount: function() {
    this.props.container.setTextContent = this.setTextContent.bind(this);

Handling attributes change

You may add attributeChanged callback to component in order to handle / modify / filter incoming values.

attributeChanged: function(attributeName, oldValue, newValue) {
    console.log('Attribute ' + attributeName + ' was changed from ' + oldValue + ' to ' + newValue);
    this.props[attributeName] = parseInt(newValue);

Communicate via DOM events

You may trigger DOM event from React component by using following snippet:

var event = new CustomEvent('change', {
  bubbles: true,

Subscribing to DOM events is similar:

React.findDOMNode(this).addEventListener('change', function(e){...});


You can also specify options to the ReactiveElements call, e.g.

ReactiveElements('welcome-component', Welcome, options);

options.useShadowDom (default false)

By default, your React element is rendered directly into the web-component root. However, by setting this option - your React element will instead be rendered in a Shadow DOM inside the web-component instead.


  • React.js
  • React DOM
  • Custom elements support or polyfill
  • Support or polyfills for:
    • regexp.match
    • regexp.replace
    • object.define-setter
    • object.define-getter
    • object.define-property
    • function.name
    • web.dom.iterable
    • array.iterator
    • object.keys
    • object.set-prototype-of
    • reflect.construct
    • function.bind


MIT: http://mit-license.org/

Copyright 2014 Denis Radin aka PixelsCommander

Inspired by Christopher Chedeau`s react-xtags

*Note that all licence references and agreements mentioned in the reactive-elements README section above are relevant to that project's source code only.