效果：

方法：

echarts的legend里设置type: 'scroll'，且一定要有data字段，且data与series里的data一一对应

代码：

this.myChart.setOption({
            color: ['#404C7E', '#4C4FC9', '#8D58E1', '#F05B72', '#FBCE38', '#1A8CFF', '#00B377'],
            legend: {
              type: 'scroll',
              itemGap: 20,
              // itemHeight: 15,
              padding: 0,
              x: 0,
              y: 'center',
              // bottom: -20,
              orient: 'vertical',
              data: this.ClassifyData
            },
            series: [
              {
                ...
                data: this.ClassifyData
              }
            ]

})

参考：

https://blog.csdn.net/yl640007010/article/details/79731604

https://blog.csdn.net/xxtnt/article/details/96114386

https://blog.csdn.net/qq_33769914/article/details/106720480