React

by Felis Catus

HTML

<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

.done {
  color: rgba(0, 0, 0, 0.3);
  text-decoration: line-through;
}

input {
  margin-right: 5px;
}

React

class Wrapper extends React.Component {
	constructor(props) {
  	super(props);
    this.data = React.Children.map(props.children,child=>({keys: Object.keys(child), props:child.props, type: child.type, ref: child.ref, child}));
  }
  
  render() {
  	console.log(this.data);
  	return (
    	<div>
        {React.Children.map(this.props.children, child=>{let Child=child.type; return (<Child>bleh!</Child>);})}
      </div>
    )
  }
}
class Simple extends React.Component {
	constructor(props) {
  	super(props);
    this.abacus = "aba";
    //this.props.additional = 'wee!';
    this.state = {blah: 'bleh'};
  }
  render() {
  console.log('aa',this.props);
  return (<p className={this.props.hmm}>{this.props.children}</p>)
  }
}
class TodoApp extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
    	items: [
      	{ text: "Learn JavaScript", done: false },
        { text: "Learn React", done: false },
        { text: "Play around in JSFiddle", done: true },
        { text: "Build something awesome", done: true }
      ]
    }
  }
  
  render() {
    return (
      <div>
        <h2>Todos:</h2>
        <Wrapper>
          <div data-text="ha">ha</div>
          <div data-text="he">he</div>
          <Simple hmm="no">
            <span className="red">z</span>
          </Simple>
        </Wrapper>
        <ol>
        {this.state.items.map(item => (
          <li key={item.id}>
            <label>
              <input type="checkbox" disabled readOnly checked={item.done} /> 
              <span className={item.done ? "done" : ""}>{item.text}</span>
            </label>
          </li>
        ))}
        </ol>
      </div>
    )
  }
}

ReactDOM.render(<TodoApp />, document.querySelector("#app"))