小程序版echarts饼图，点击扇形或图例，扇形没有高亮效果

Question

看官方案例PC版的饼图不用配置，默认hover或点击的时候，扇形是有高亮放大效果的。小程序版的echarts默认没有该怎么配置来高亮放大呢？

Answer 1

function setOption(chart, xdata, ydata) {
const option = {

title: {
  text: '出勤状况',
  textStyle: {
    fontWeight: '500',
    fontSize: 15,
    color: '#fff' //title颜色
  },
  x: 'center',
  y: '0'
},
legend: {
  data: ydata,
  top: 50,
  x: "center",
  textStyle: {
    color: '#fff' // 图例文字颜色
  }
},
tooltip: {
  show: true,
  formatter: '名称：{b}\n人数：{c}\n占比：{d} %', //b=名称 c=数值 d=百分比 \n换行
},
toolbox: {
  show: true,
  feature: {
    mark: {
      show: true
    },
    dataView: {
      show: true,
      readOnly: false
    },
    restore: {
      show: true
    },
    saveAsImage: {
      show: true
    }
  }
},
color: ['#56cbff', '#00fcc9',"#ff0000","#fba035"],
calculable: true,
series: [{
  name: '出勤情况',
  type: 'pie',
  center: ['50%', '50%'],
  radius: 80,
  itemStyle: {
    normal: {
      label: {
        show: true,
        position: 'inner',
        formatter: function(params) {
          return (params.percent - 0).toFixed(0) + '%'
        }
      },
      labelLine: {
        show: false
      }
    },
    emphasis: {
      label: {
        show: true,
        formatter: "{b}\n{d}%"
      }
    }
  },
  data: [{
    name: ydata[0],
    value: xdata[0],
  }, {
    name: ydata[1],
    value: xdata[1],
  }, {
    name: ydata[2],
    value: xdata[2],
  }, {
    name: ydata[3],
    value: xdata[3],
  }, ]
}]

};
chart.setOption(option)
}