vue使用g2ploat图表防止无限加载问题

解决办法：首次加载时渲染图表，再次调用时只更改数据

  getPassdata(data) {
            this.passColumnPlot = new Column('passcontainer', {
                data,
                xField: 'year',
                yField: 'count',
                columnWidthRatio: 0.3,
                xAxis: {
                    label: {
                        autoHide: true,
                        autoRotate: false,
                    },
                },
                meta: {
                    year: {
                        alias: '类别',
                    },
                    count: {
                        alias: '数量',
                    },
                },
            });
            this.passColumnPlot.render();
        },
   // 获取报表
        async getReport() {
            const getReportDatalist = await Taskmanagement.getReportData(this.formselect);
            if (getReportDatalist == null) return;
            this.getReportDatalist = getReportDatalist
            if (this.firstChart == true) {
                this.firstChart = false;
                this.getPassdata(this.getReportDatalist)
            } else {
     this.passColumnPlot.chart.changeData(this.getReportDatalist);
            }
        }