This cheatsheet is out of date. It was created at a time I started learning Reactjs, months ago. It doesn't reflect the latest version of react. For a cheatsheet kept current, head to : reactjs Cheat Sheet by kitallis

Changed to es6 syntax.


     import React from 'react';

class MyComponent extends React.Component {
  render() {
    return
     
      Hello {this.props.name}
     
     ;
  }
}


     React.render(
     
     
     , document.body);


     import React from 'react';
import CommentList from './path/to/CommentList'

class MyComponent extends React.Component {

  getInitialState() {
    return {
      data: [], 
      postingAllowed: false
    };
  }
  
  componentWillMount() {
    $.get(this.props.url, function (data) {
      this.setState(data);
     // this.state.postAllowed === true // Don't ever
     // this.replaceState({ ... }); // Reseting state to the specified variables
    });
  } 
  
  render() {
    return (
      @#CommentList data={this.state.data}  /#@
    );
  }
});

  /* 
  Access state in any of:
  
  shouldComponentUpdate()  
  componentWillUpdate() 
  render()
  componentDidUpdate()
*/


     import React from 'react';

class MyComponent extends React.Component {

 static propTypes = {
  // required
  requiredFunc: React.PropTypes.func.isRequired,
  requiredAny: React.PropTypes.any.isRequired,
  // primitives, optional by default
  bool: React.PropTypes.bool,
  func: React.PropTypes.func,
  number: React.PropTypes.number,
  string: React.PropTypes.string,
}
  
static defaultProps = { fullscreen: false };
  
  /* 
  In any of:
  
  componentWillReceiveProps()			
  shouldComponentUpdate()  
  componentWillUpdate()  
  
  this.setProps({ fullscreen: true });
    this.props.fullscreen === true
    this.replaceProps({ ... });
  */
};


     getDefaultProps()				
getInitialState()  

 // initial render only
 // not executed when properties or state are changed
componentWillMount()
componentDidMount()

// when new properties are set
componentWillReceiveProps(props)
// when new properties or state are set
shouldComponentUpdate(props, state)
componentWillUpdate(props, state)

// all scenarios
render()
  
// When properties or state are set
componentDidUpdate(prevProps, prevState)
componentDidMount()
  
// removing  
componentWillUnmount()

// ...there is no DidUnmount or ReceiveState.


     import React from 'react';

class TodoList extends React.Component {
  // Let's move this to a static method, to minimise the 
  // footprint of each object instance
  static createItem(itemText) {
      return
     
      {itemText}
     
     ;
  }
  
  render() {
    return
     
      {this.props.items.map(TodoList.createItem)}
     
     ;
  }
});


     import React from 'react';

class VideoPlayer extends React.Component {
  render: function() {
    return @#VideoEmbed {...this.props} controls='false' /#@;
  }
});

@#VideoPlayer src="video.mp4" /#@


     // Use composition and functional programming, pass in an 
// object that will manage the decoration actions. Directly 
// augmenting the object with a mixin  makes for code that is 
// terse but also hard to debug.
// https://medium.com/@dan_abramov/mixins-are-dead-long-live-higher-order-components-94a0d2f9e750