legend: {data: this.data,orient: 'vertical',x: 'left',y: 'center',icon: 'circle', //图例图标修改formatter: function(params) {for (let i = 0; i < option.series[0].data.length; i++) {if (option.series[0].data[i].name === params) {// return params + ':' + option.series[0].data[i].valuelet target = option.series[0].data[i].valuelet arr = ['{a}' + params + '}', '{b}' + target + '}']return arr.join('\n')}}},textStyle: {rich: {a: {fontSize: 16,padding: 10},b: {fontSize: 16,color: '#333'}}}},