```javascript
?<!--入駐統計折線圖-->
? <hostLine ref="settled" :settledData="settledData"> ? </hostLine>
? // 獲取入駐統計
? ?async getSettledData() {
? ? ? ? const result = await getProjectSettled();
? ? ? ? // 如果后臺返回的數據是空 前端就渲染一個空表出來 必須等獲取到數據以后在渲染 Echarts
? ? ? ? if (result.success) {
? ? ? ? ? if (result.data.companyCount.length === 0 && result.data.stationCount.length === 0) {
? ? ? ? ? ? Object.assign(data.settledData);
? ? ? ? ? } else {
? ? ? ? ? ? Object.assign(data.settledData, result.data);
? ? ? ? ? }
? ? ? ? ? update.value = new Date().getTime();
? ? ? ? }
? ? ? },

<template>
  <div class="line-overview">
    <div class="host-line">
      <div class="host-line-title">入駐統計</div>
      <div id="hostLine" style="width: 100%; height: 360px"></div>
    </div>
  </div>
</template>
<script lang="ts">
import * as echarts from "echarts/core";
import { TooltipComponent, LegendComponent, GridComponent, } from 'echarts/components';
import { LineChart } from 'echarts/charts';
import { CanvasRenderer } from 'echarts/renderers';
import { UniversalTransition } from 'echarts/features';
import { defineComponent, inject, watch, onMounted, onUnmounted, ref, shallowRef, nextTick  } from "vue";
echarts.use([
  TooltipComponent,
  LegendComponent,
  GridComponent,
  LineChart,
  CanvasRenderer,
  UniversalTransition
]);
export default defineComponent({
  props: ["settledData"],
  setup(props) {
    const update = inject("update");
    const LineChart = shallowRef();
    const drawChart = () => {
      const cahrtData = props.settledData;
      LineChart.value = echarts.init(document.getElementById("hostLine") as HTMLElement);
      // 指定圖表的配置項和數據
      let option = {
        tooltip: {
          trigger: "axis",
        },
        legend: {
          data: ['企業(yè)數量', '工位數量',]
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: {
          type: "category",
          boundaryGap: false,
          data: cahrtData?.date.reverse()
        },
        // Y標尺固定
        yAxis: {
            type: "value",
            scale: true,
            // // boundaryGap: [0.2, 0.2],
            // // 動態(tài)設置Y軸的刻度值 只取整數
            min: (value:Record<string,number>) => {
              return Math.floor(value.min / 100) * 100;
            },
            max: (value:Record<string,number>) => {
              return Math.ceil(value.max / 100) * 100;
            },
        },
        series: [
          {
            name: "企業(yè)數量",
            type: "line",
            stack: "Total",
            data: cahrtData?.companyCount,
          },
          {
            name: "工位數量",
            type: "line",
            stack: "Total",
            data: cahrtData?.stationCount,
          },
        ],
      };
      // 使用剛指定的配置項和數據顯示圖表。
      LineChart.value.setOption(option);
      window.addEventListener("resize", () => {
        LineChart.value.resize();
      });
    };
    onMounted(() => {
      watch([update], () => {
        nextTick(()=>{
          drawChart();
        })
      }, {
        deep: true
      })
    });
    onUnmounted(() => {
      LineChart.value.dispose();
    });
  },
});
</script>

<div class="echarts-vue" style="width:500px; height:500px" ></div>