ElementUi tab组件切换导致echarts宽度变窄问题

解决tab组件变成100px的问题
使用echarts实例自带的resize()方法

<el-card shadow="always" style="height: calc(100vh - 260px);">
          <el-tabs v-model="activeName" type="card" @tab-click="handleClick">
            <el-tab-pane label="事业部各部门人数" name="first" :lazy="true">
              <DelayRateBarChart1 :treeId="treeId" ref="first"></DelayRateBarChart1>
            </el-tab-pane>
            <el-tab-pane label="事业部人员地区分布" name="second" :lazy="true">
              <DelayRateBarChart2 :treeId="treeId" ref="second"></DelayRateBarChart2>
            </el-tab-pane>
            <el-tab-pane label="事业部人员司龄分析" name="third" :lazy="true">
              <DelayRateBarChart3 :treeId="treeId" ref="third"></DelayRateBarChart3>
            </el-tab-pane>
          </el-tabs>
        </el-card>

   //tabs图表切换
    handleClick(tab, event) {
      // console.log(tab.name);
      this.$nextTick(() => {
        this.$refs[tab.name].resize()
      })
    },