vue3+ts中使用echarts

<div class="echart_box" ref="echartDom"></div>

<script setup lang="ts">
import * as echarts from "echarts";
const echartDom = ref()  // 使用ref创建虚拟DOM引用，使用时用main.value
const getEchart = () => {
    var myChart = echarts.init(echartDom.value);
    var option = {
        title: {
            text: 'ECharts 入门示例'
        },
        tooltip: {},
        legend: {
            data: ['销量']
        },
        xAxis: {
            data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
        },
        yAxis: {},
        series: [
            {
                name: '销量',
                type: 'bar',
                data: [5, 20, 36, 10, 10, 20]
            }
        ]
    };
    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option);
}
</script>

const getWarning = () => {
const chartEle: HTMLElement = document.getElementById('warningDom') as HTMLElement;
chartEle.removeAttribute('_echarts_instance_');//初次进入页面正常，再次从上一页面返回当前页面时图表不展示。init 后会给图表容器附加一个_echarts_instance_属性，需要每次进入页面重新渲染图表之前去除图表容器上的_echarts_instance_属性
const myChart1 = echarts.init(chartEle);

 let option = {
    ...
 }
 myChart1.setOption(option);
}