类型：开发

描述：

src/views/home/components/jam-count.vue

@@ -138,7 +138,23 @@
     } else {
       params.series[0].data = getSeriesData()
     }
-    setOption(params)
+    const chart = setOption(params)
+    chart.on('legendselectchanged', function (e) {
+      var echartsArr = [];
+      for (let key in e.selected) {
+        if (e.selected[key]) {
+          echartsArr.push(key)
+        }
+      }
+      var echartsNum = 0;
+      props.list.forEach(item => {
+        if(echartsArr.includes(item.name)){
+          echartsNum += parseInt(item.count)
+        }
+      })
+      params.series[0].label.formatter = `{label|拥堵次数}` + '\n' + `{value|${echartsNum}}`;
+      setOption(params);
+    });
   }
 
   onMounted(() => {})