422

src/hooks/echart.js

@@ -4,14 +4,22 @@ import { guid } from '@/utils/util'
 
 export function useEchart() {
   let chart = null
+  let chartVal = ref(null)
   let id = ref(guid())
   const initChart = () => {
     const dom = document.getElementById(id.value)
     chart = echarts.init(dom)
+	chartVal.value = chart
   }
   const setOption = (params, update = false) => {
     chart.setOption(params, update)
   }
+  const clearOption = () => {
+	   // 将series设置为空数组，可以清空图表内容
+    chart.setOption({
+		series:[]
+	})
+  }
   const dispose = () => {
     chart.dispose()
     chart = null
@@ -25,5 +33,5 @@ export function useEchart() {
     window.addEventListener('resize', resize)
   })
 
-  return { id, chart, setOption, dispose, initChart }
+  return { id, chart, setOption, dispose, initChart,chartVal,clearOption }
 }