A bar chart that has customized event handler

by ucdl

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://npmcdn.com/[email protected]/dist/react-with-addons.min.js"></script>
<script src="https://npmcdn.com/[email protected]/dist/react-dom.min.js"></script>
<script src="https://npmcdn.com/prop-types/prop-types.min.js"></script>
<script src="https://npmcdn.com/recharts/umd/Recharts.min.js"></script>
<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

CSS

body {
  margin: 0;
}
#container {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  padding: 10px;
  width: 800px;
  height: 800px;
  background-color: #fff;
}

Babel + JSX

const {BarChart, Bar, Cell, XAxis, YAxis, CartesianGrid, Tooltip, Legend} = Recharts;
const TinyBarChart = React.createClass({
	getInitialState() {
  	return {
    	data: [
        {name: 'Page A', uv: 4000, pv: 2400, amt: 2400},
        {name: 'Page B', uv: 3000, pv: 1398, amt: 2210},
        {name: 'Page C', uv: 2000, pv: 9800, amt: 2290},
        {name: 'Page D', uv: 2780, pv: 3908, amt: 2000},
        {name: 'Page E', uv: 1890, pv: 4800, amt: 2181},
        {name: 'Page F', uv: 2390, pv: 3800, amt: 2500},
        {name: 'Page G', uv: 3490, pv: 4300, amt: 2100},
			],
    	activeIndex: 0,
    };
  },
  
  handleClick(data, index) {
  	this.setState({
    	activeIndex: index,
    });
  },
  
	render () {
  	const { activeIndex, data } = this.state;
    const activeItem = data[activeIndex];
    
  	return (
    	<div>
      	<p>Click each rectangle </p>
        <BarChart width={150} height={40} data={data} layout='vertical' >
           <Bar dataKey='uv' onClick={this.handleClick}>
            {
              data.map((entry, index) => (
                <Cell cursor="pointer" fill={index === activeIndex ? '#82ca9d' : '#8884d8' } key={`cell-${index}`}/>
              ))
            }
           </Bar>
         </BarChart>
         <p class="content">{`Uv of "${activeItem.name}": ${activeItem.uv}`}</p>
       </div>
    );
  }
})

ReactDOM.render(
  <TinyBarChart />,
  document.getElementById('container')
);