切换时，清空画布

pages/score/index.js

@@ -66,6 +66,7 @@ Page({
     is_biz: 0, //是否选择门店跳转过来
     scoreData: [],
     showLineChart: false, //是否显示Line图表
+    unloadingLineChart: false,// 是否加载图标
     ecLine: {
       onInit: lineChart
     },
@@ -172,60 +173,45 @@ Page({
   },
 
   getChartsData() {
-    lineChartData = {
-      backgroundColor: "#ffffff",
-      xAxis: {
-        show: false
-      },
-      yAxis: {
-        show: false
-      },
-      radar: {
-        // shape: 'circle',
-        splitArea: {
-          areaStyle: {
-            color: ['#f6f6f6', '#ffffff']
-          }
-        },
-        indicator: [{
-            name: '拓客能力',
-            max: 100
-          },
-          {
-            name: '跟进能力',
-            max: 100
-          },
-          {
-            name: '邀约能力',
-            max: 100
-          },
-          {
-            name: '成交能力',
-            max: 100
-          },
-          {
-            name: '交付能力',
-            max: 100
-          }
-        ]
-      },
-      series: [{
-        name: '标题',
-        type: 'radar',
-        data: [{
-          value: [0, 0, 0, 0, 0],
-          name: '预算',
-          ...this.data.chartOrangeStyle //...this.data.chartGreenStyle
-        }]
-      }]
-    };
+    
     let params = {}
     params['day_type'] = this.data.tab_date_cur
+    this.setData({
+      unloadingLineChart: false
+    })
     _.apiQuery.appRadar(params).then(res => {
-      lineChartData.radar.indicator = res.data.indicator
-      lineChartData.series[0].data[0].value = res.data.series_value
+      lineChartData = {
+        backgroundColor: "#ffffff",
+        xAxis: {
+          show: false
+        },
+        yAxis: {
+          show: false
+        },
+        radar: {
+          // shape: 'circle',
+          splitArea: {
+            areaStyle: {
+              color: ['#f6f6f6', '#ffffff']
+            }
+          },
+          indicator: res.data.indicator
+        },
+        series: [{
+          name: '标题',
+          type: 'radar',
+          data: [{
+            value: res.data.series_value,
+            name: '预算',
+            ...this.data.chartOrangeStyle //...this.data.chartGreenStyle
+          }]
+        }]
+      };
+      // lineChartData.radar.indicator = res.data.indicator
+      // lineChartData.series[0].data[0].value = res.data.series_value
       this.setData({
         showLineChart: true,
+        unloadingLineChart: true,
         ['ecLine.onInit']: lineChart,
       })
     })

pages/score/index.wxml

@@ -48,7 +48,7 @@
         </block>
 
         <view class="echarts-con" style="width:100%;height:500rpx;" wx:if="{{showLineChart}}">
-          <ec-canvas id="mychart-dom-line" ec="{{ ecLine }}"></ec-canvas>
+          <ec-canvas wx:if="{{unloadingLineChart}}" id="mychart-dom-line" ec="{{ ecLine }}"></ec-canvas>
         </view>
 
         <view class="text-center pt40">