How does the echars pie chart bind click events to label?

see on the official website that components can be defined. I use 

chart.on("click", "series.label", function () {...});

tried and it didn"t work. What is it caused by?

-- add rich

label: {

      show: true,
      rich: {
        til: {
          color: "-sharp000",
          fontSize: 14,
          align: "center",
          lineHeight: 21
        },
        desc: {
          color: "-sharp000",
          fontSize: 9,
          align: "center",
          lineHeight: 21
        },
        high: {
          color: "-sharpf8473d",
          fontSize: 9,
          align: "center",
          lineHeight: 21
        },
        middle: {
          color: "-sharpf9d03c",
          fontSize: 9,
          align: "center",
          lineHeight: 21
        },
        low: {
          color: "-sharp44d2ca",
          fontSize: 9,
          align: "center",
          lineHeight: 21
        }
      }
    },
Javascript echarts
Jun.18,2022 
chart.on('click', function (params) {...} paramsdataTypeundefined
componentType:"series" -> seriesType: "pie" -> dataType: undefined

chart.on('click', 'series.pie.label', function () {...});
labelseriesTypedataType

give you a demo 

<script type="text/javascript">
    var myChart = echarts.init(document.getElementById('main'));

    var option = {
        title: {
            text: '',
            subtext: '',
            x: 'center'
        },
        tooltip: {
            trigger: 'item',
            formatter: "{a} <br/>{b} : {c} ({d}%)"
        },
        legend: {
            orient: 'vertical',
            left: 'left',
            data: ['', '', '', '', '']
        },
        series: [
            {
                name: '',
                type: 'pie',
                radius: '55%',
                center: ['50%', '60%'],
                data: [
                    { value: 335, name: '' },
                    { value: 310, name: '' },
                    { value: 234, name: '' },
                    { value: 135, name: '' },
                    { value: 1548, name: '' }
                ],
                label: {
                    show: true
                },
                itemStyle: {
                    emphasis: {
                        shadowBlur: 10,
                        shadowOffsetX: 0,
                        shadowColor: 'rgba(0, 0, 0, 0.5)'
                    }
                }
            }
        ]
    };
    myChart.setOption(option);
    myChart.on('click', 'series.pie.label', function () {
        console.log('click');
    });
</script>

Previous: In Vue project, set axios global, Iview this.$Notice (Message), etc., in main.js, which cannot be used.

Next: Use document.execCommand ('InsertUnorderedList') to format the outer tag

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e78227-453f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e78227-453f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?