uniapp 使用echarts H5 tooltip不显示

使用echarts5.5.1，项目使用vue3
错误代码如下：

const ctx = document.getElementById("winChart");
                
                // this.chart   原本data()里面定义了chart 以下为修改后代直接定义全局参数myChart
                 this.chart = echarts.init(ctx, null, {
                    width: window.innerWidth - 100,
                    height: window.innerHeight - 100
                });
                this.option = {
                    tooltip: {
                        trigger: 'axis',
                        show: true,
                    },
                    legend: {
                        data:  ["胜率","综合得分","二连杀概率"]
                    },
                    calculable: true,
                    xAxis: [{
                        type: 'category',
                        boundaryGap: false,
                        data: this.rowTime,
                    }],
                    yAxis: [{
                        type: 'value'
                    }],
                    series: [
                         {
                                    name:'胜率',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("successRate",this.dataArr,0)
                                },
                                {
                                    name:'综合得分',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("suggestRate",this.dataArr,0)
                                },
                                {
                                    name:'二连杀概率',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("doubleKillsRate",this.dataArr,0)
                                }
                    ]
                };

                this.chart.setOption(this.option);

再data() 中定义参数chart 使用this.chart这种方式能正常显示图表，但是tooltip无法显示，正确的方式定义一个全局变量把this.chart替换成全局变量

    import * as echarts from 'echarts';
    let myChart = null;

正确代码

const ctx = document.getElementById("winChart");
                 myChart = echarts.init(ctx, null, {
                    width: window.innerWidth - 100,
                    height: window.innerHeight - 100
                });
                this.option = {
                    tooltip: {
                        trigger: 'axis',
                        show: true,
                    },
                    legend: {
                        data:  ["胜率","综合得分","二连杀概率"]
                    },
                    calculable: true,
                    xAxis: [{
                        type: 'category',
                        boundaryGap: false,
                        data: this.rowTime,
                    }],
                    yAxis: [{
                        type: 'value'
                    }],
                    series: [
                         {
                                    name:'胜率',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("successRate",this.dataArr,0)
                                },
                                {
                                    name:'综合得分',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("suggestRate",this.dataArr,0)
                                },
                                {
                                    name:'二连杀概率',
                                    type:'line',
                                    smooth:true,
                                    areaStyle: {},
                                    data:this.getData("doubleKillsRate",this.dataArr,0)
                                }
                    ]
                };

                myChart.setOption(this.option);

后记：遇到这个问题，网上找了很多方法，main.js 里面添加代码window.wx = {} ，好多人说这样就解决了，我这个版本然并卵，使用上诉方法一下解决，洗洗睡。