更新代码

src/views/dashboard/LineChart.vue

@@ -102,6 +102,7 @@ export default {
   mounted() {
     publisherInstance.subscribe('refresh', this.staticAmountLine);
     this.$nextTick(() => {
+      this.chart = echarts.init(this.$refs.chart, 'macarons')
       this.staticAmountLine();
     })
   },
@@ -112,20 +113,25 @@ export default {
        if (code === 200) {
          const { x } = data;
          echartsConfig.xAxis.data = x;
+         const series = [];
          for (const key in legendMap) {
            const name = legendMap[key];
-           echartsConfig.series.push({
+           series.push({
              name,
              yAxisIndex: key === 'orderCountData' ? 1 : 0,
              data: data[key],
              type: "line",
            })
          }
+         const options = this.chart.getOption();
+         if (options && options.legend) {
+           echartsConfig.legend = { selected: options.legend[0].selected }
+         }
+         echartsConfig.series = series;
          this.initChart(echartsConfig)
        }
     },
     initChart(chartData) {
-      this.chart = echarts.init(this.$refs.chart, 'macarons')
       this.chart.setOption(chartData);
     },
   },