diff --git a/src/views/dashboard/admin/components/LineChart.vue b/src/views/dashboard/admin/components/LineChart.vue
index 727c4a5f..e654168d 100644
--- a/src/views/dashboard/admin/components/LineChart.vue
+++ b/src/views/dashboard/admin/components/LineChart.vue
@@ -33,8 +33,7 @@ export default {
   },
   data() {
     return {
-      chart: null,
-      sidebarElm: null
+      chart: null
     }
   },
   watch: {
@@ -58,6 +57,10 @@ export default {
     this.chart = null
   },
   methods: {
+    initChart() {
+      this.chart = echarts.init(this.$el, 'macarons')
+      this.setOptions(this.chartData)
+    },
     setOptions({ expectedData, actualData } = {}) {
       this.chart.setOption({
         xAxis: {
@@ -126,10 +129,6 @@ export default {
           animationEasing: 'quadraticOut'
         }]
       })
-    },
-    initChart() {
-      this.chart = echarts.init(this.$el, 'macarons')
-      this.setOptions(this.chartData)
     }
   }
 }
diff --git a/src/views/dashboard/admin/components/mixins/resize.js b/src/views/dashboard/admin/components/mixins/resize.js
index 56758874..bcd17bf0 100644
--- a/src/views/dashboard/admin/components/mixins/resize.js
+++ b/src/views/dashboard/admin/components/mixins/resize.js
@@ -14,6 +14,8 @@ export default {
     this.$_destroyResizeEvent()
     this.$_destroySidebarResizeEvent()
   },
+  // to fixed bug when cached by keep-alive
+  // https://github.com/PanJiaChen/vue-element-admin/issues/2116
   activated() {
     this.$_initResizeEvent()
     this.$_initSidebarResizeEvent()
@@ -25,11 +27,6 @@ export default {
   methods: {
     // use $_ for mixins properties
     // https://vuejs.org/v2/style-guide/index.html#Private-property-names-essential
-    $_sidebarResizeHandler(e) {
-      if (e.propertyName === 'width') {
-        this.$_resizeHandler()
-      }
-    },
     $_resizeHandler() {
       return debounce(() => {
         if (this.chart) {
@@ -43,6 +40,11 @@ export default {
     $_destroyResizeEvent() {
       window.removeEventListener('resize', this.$_resizeHandler)
     },
+    $_sidebarResizeHandler(e) {
+      if (e.propertyName === 'width') {
+        this.$_resizeHandler()
+      }
+    },
     $_initSidebarResizeEvent() {
       this.$_sidebarElm = document.getElementsByClassName('sidebar-container')[0]
       this.$_sidebarElm && this.$_sidebarElm.addEventListener('transitionend', this.$_sidebarResizeHandler)