Antv/G2 柱状图添加自定义点击事件

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
      <title>柱状图点击事件</title>
  </head>
  <body>
    <div id="container" />
    <script src="https://gw.alipayobjects.com/os/lib/antv/g2/4.2.8/dist/g2.min.js"></script>
    <script src="https://gw.alipayobjects.com/os/antv/pkg/_antv.data-set-0.11.1/dist/data-set.js"></script>
    <script>
      <!-- 浏览器引入，请使用全局命名空间 G2，如 new Chart() 改为 new G2.Chart，即可运行。 -->
      const data = [
      { month: 'Jan', city: 'Tokyo', temperature: 7 },
      { month: 'Jan', city: 'London', temperature: 3.9 },
      { month: 'Feb', city: 'Tokyo', temperature: 6.9 },
      { month: 'Feb', city: 'London', temperature: 4.2 },
      { month: 'Mar', city: 'Tokyo', temperature: 9.5 },
      { month: 'Mar', city: 'London', temperature: 5.7 },
      { month: 'Apr', city: 'Tokyo', temperature: 14.5 },
      { month: 'Apr', city: 'London', temperature: 8.5 },
      { month: 'May', city: 'Tokyo', temperature: 18.4 },
      { month: 'May', city: 'London', temperature: 11.9 },
      { month: 'Jun', city: 'Tokyo', temperature: 21.5 },
      { month: 'Jun', city: 'London', temperature: 15.2 },
      { month: 'Jul', city: 'Tokyo', temperature: 25.2 },
      { month: 'Jul', city: 'London', temperature: 17 },
      { month: 'Aug', city: 'Tokyo', temperature: 26.5 },
      { month: 'Aug', city: 'London', temperature: 16.6 },
      { month: 'Sep', city: 'Tokyo', temperature: 23.3 },
      { month: 'Sep', city: 'London', temperature: 14.2 },
      { month: 'Oct', city: 'Tokyo', temperature: 18.3 },
      { month: 'Oct', city: 'London', temperature: 10.3 },
      { month: 'Nov', city: 'Tokyo', temperature: 13.9 },
      { month: 'Nov', city: 'London', temperature: 6.6 },
      { month: 'Dec', city: 'Tokyo', temperature: 9.6 },
      { month: 'Dec', city: 'London', temperature: 4.8 },
    ];

    const chart = new G2.Chart({
      container: 'container',
      autoFit: true,
      height: 500,
    });

    chart.data(data);

    chart.tooltip({
      showCrosshairs: true,
      shared: true,
    });

    chart.axis('temperature', {
      label: {
        formatter: (val) => {
          return val + ' °C';
        },
      },
    });

    chart
      .interval()
      .position('month*temperature')
      .color('city')
      .adjust([
        {
          type: 'dodge',
          marginRatio: 0,
        },
      ])

    chart.interaction('active-region')
    chart.render();
    // 监听click事件
    chart.on('element:click',(ev)=>{
      const data=ev.data.data; 
      console.log('ev data',data)        
           
    })
    </script>
  </body>
</html>