ECharts 中组件的行为实例

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8" />
  <title>ECharts 中组件的行为 实例</title>
  
  <script src="https://demo.runoops.com/static/lib/echarts@5.4.3/dist/echarts.min.js"></script>
</head>

<body>
  
  <div id="main" style="width: 600px;height:400px;"></div>
  <script type="text/javascript">
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

// 指定图表的配置项和数据
    // 基于准备好的dom，初始化ECharts实例
    // var myChart = echarts.init(document.getElementById('main'));

// 指定图表的配置项和数据
    var option = {
      title: {
        text: '饼图程序调用高亮示例',
        left: 'center'
      },
      tooltip: {
        trigger: 'item',
        formatter: '{a} <br/>{b} : {c} ({d}%)'
      },
      legend: {
        orient: 'vertical',
        left: 'left',
        data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
      },
      series: [
        {
          name: '访问来源',
          type: 'pie',
          radius: '55%',
          center: ['50%', '60%'],
          data: [
            { value: 335, name: '直接访问' },
            { value: 310, name: '邮件营销' },
            { value: 234, name: '联盟广告' },
            { value: 135, name: '视频广告' },
            { value: 1548, name: '搜索引擎' }
          ],
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          }
        }
      ]
    };
    myChart.setOption(option);

let currentIndex = -1;

setInterval(function () {
      var dataLen = option.series[0].data.length;
      // 取消之前高亮的图形
      myChart.dispatchAction({
        type: 'downplay',
        seriesIndex: 0,
        dataIndex: currentIndex
      });
      currentIndex = (currentIndex + 1) % dataLen;
      // 高亮当前图形
      myChart.dispatchAction({
        type: 'highlight',
        seriesIndex: 0,
        dataIndex: currentIndex
      });
      // 显示 tooltip
      myChart.dispatchAction({
        type: 'showTip',
        seriesIndex: 0,
        dataIndex: currentIndex
      });
    }, 1000);
  </script>
</body>

</html>