content: import React from 'react';
  import ReactDOM from 'react-dom';
  
  import JqxChart from '../../../jqwidgets-react/react_jqxchart.js';
  import JqxDropDownList from '../../../jqwidgets-react/react_jqxdropdownlist.js';
  
  class App extends React.Component {
      componentDidMount() {
          this.refs.dropDownSerie1Symbol.on('change', (event) => {
              let value = event.args.item.value;
              this.refs.myChart.seriesGroups()[0].series[0].symbolType = value;
              this.refs.myChart.update();
          });
          this.refs.dropDownSerie2Symbol.on('change', (event) => {
              let value = event.args.item.value;
              this.refs.myChart.seriesGroups()[0].series[1].symbolType = value;
              this.refs.myChart.update();
          });
      }
      render() {
          let sampleData = [
              { City: 'New York', SalesQ1: 310500, SalesQ2: 210500, YoYGrowthQ1: 1.05, YoYGrowthQ2: 1.25 },
              { City: 'London', SalesQ1: 120000, SalesQ2: 169000, YoYGrowthQ1: 1.15, YoYGrowthQ2: 0.95 },
              { City: 'Paris', SalesQ1: 205000, SalesQ2: 275500, YoYGrowthQ1: 1.45, YoYGrowthQ2: 1.15 },
              { City: 'Tokyo', SalesQ1: 187000, SalesQ2: 130100, YoYGrowthQ1: 0.45, YoYGrowthQ2: 0.55 },
              { City: 'Berlin', SalesQ1: 187000, SalesQ2: 113000, YoYGrowthQ1: 1.65, YoYGrowthQ2: 1.05 },
              { City: 'San Francisco', SalesQ1: 142000, SalesQ2: 102000, YoYGrowthQ1: 0.75, YoYGrowthQ2: 0.15 },
              { City: 'Chicago', SalesQ1: 171000, SalesQ2: 124000, YoYGrowthQ1: 0.75, YoYGrowthQ2: 0.65 }
          ];
  
          let padding = { left: 5, top: 5, right: 5, bottom: 5 };
  
          let titlePadding = { left: 90, top: 0, right: 0, bottom: 10 };
  
          let xAxis =
              {
                  dataField: 'City',
                  valuesOnTicks: false
              };
  
          let valueAxis =
              {
                  unitInterval: 50000,
                  minValue: 50000,
                  maxValue: 350000,
                  title: { text: 'Sales ($)<br>' },
                  labels: {
                      formatSettings: { prefix: '$', thousandsSeparator: ',' },
                      horizontalAlignment: 'right'
                  }
              };
  
          let seriesGroups =
              [
                  {
                      type: 'bubble',
                      series: [
                          { dataField: 'SalesQ1', radiusDataField: 'YoYGrowthQ1', minRadius: 10, maxRadius: 30, displayText: 'Sales in Q1' },
                          { dataField: 'SalesQ2', radiusDataField: 'YoYGrowthQ2', minRadius: 10, maxRadius: 30, displayText: 'Sales in Q2' }
                      ]
                  }
              ];
          let symbolsList = ['circle', 'diamond', 'square', 'triangle_up', 'triangle_down', 'triangle_left', 'triangle_right'];
          return (
              <div>
                  <JqxChart ref='myChart' style={{ width: 850, height: 500 }}
                      title={'Sales by City in Q1 and Q2, and YoY sales growth'} description={'(the size of the circles represents relative YoY growth)'}
                      showLegend={true} enableAnimations={true} padding={padding}
                      titlePadding={titlePadding} source={sampleData} xAxis={xAxis}
                      valueAxis={valueAxis} colorScheme={'scheme04'} seriesGroups={seriesGroups}
                  />
                  <table style={{ width: 550 }}>
                      <tbody>
                          <tr>
                              <td>
                                  <p>Select Serie 1 Symbol:</p>
                                  <JqxDropDownList ref='dropDownSerie1Symbol'
                                      width={200} height={25} selectedIndex={0}
                                      dropDownHeight={100} source={symbolsList}
                                  />
                              </td>
                              <td>
                                  <p>Select Serie 2 Symbol:</p>
                                  <JqxDropDownList ref='dropDownSerie2Symbol'
                                      width={200} height={25} selectedIndex={0}
                                      dropDownHeight={100} source={symbolsList}
                                  />
                             </td>
                          </tr>
                      </tbody>
                  </table>
              </div>
          )
      }
  }
  
  ReactDOM.render(<App />, document.getElementById('app'));
  