canvas中设置animation: true 第一次进入制作的图表正常显示多次进行退出进入图表后图表中数据随动画上线闪烁后才展示全面，如图。这个如何处理呢？判断会员是否开卡。是否属于bug？微信小程序名称为：请求管理员帮助



代码如下： 运用了此chartjs库
var wxCharts = require('../../../utils/wxcharts.js');var app = getApp();var lineChart = null;Page({ data: { }, touchHandler: function (e) { console.log(e); console.log(lineChart.getCurrentDataIndex(e)); lineChart.showToolTip(e, { // background: '#7cb5ec' }); }, createSimulationData: function () { var categories = []; var data = []; for (var i = 0; i < 10; i++) { categories.push('2016-' + (i + 1)); data.push(Math.random()*(20-10)+10); } // data[4] = null; return { categories: categories, data: data } }, updateData: function () { var simulationData = this.createSimulationData(); var series = [{ name: '成交量1', data: simulationData.data, format: function (val, name) { return val.toFixed(2) + '万'; } }]; lineChart.updateData({ categories: simulationData.categories, series: series }); }, onLoad: function (e) { var windowWidth = 320; try { var res = wx.getSystemInfoSync(); windowWidth = res.windowWidth; } catch (e) { console.error('getSystemInfoSync failed!'); } var simulationData = this.createSimulationData(); lineChart = new wxCharts({ canvasId: 'lineCanvas', type: 'line', categories: simulationData.categories, animation: true, background: '#f5f5f5', series: [{ name: '成交量1', data: simulationData.data, format: function (val, name) { return val.toFixed(2) + '万'; } }, { name: '成交量2', data: [11, 24, 29, 15, null, 21, 32, 23, 45, 21], format: function (val, name) { return val.toFixed(2) + '万'; } }], xAxis: { disableGrid: true }, yAxis: { title: '成交金额 (万元)', format: function (val) { return val.toFixed(2); }, min: 0 }, width: windowWidth, height: 200, dataLabel: false, dataPointShape: true, extra: { lineStyle: 'curve' } }); }});