更改组件数据不能更新问题

src/components/chart/combination/bar-line-chart.vue

@@ -312,6 +312,9 @@ console.log(JSON.stringify(option))
   unmounted() {
     window.removeEventListener("resize", this.resize);
   },
+  beforeUpdate(){
+  	  this.areaData = this.bardata.area;
+  },
   watch: {
     bardata(val) {
       if (val.area && val.area.length < this.pageSize) {