在mpvue中使用图表插件wx-charts

// /src/pages/bar/bar.vue script中内容
var wxCharts = require('@/lib/wxcharts-min.js');  //该路径为该js文件在你项目中的路径
export default {
	name: "bar",
	data() {
		return {
			bar: null
		}
	},
		
	mounted: function (e) {
		var windowWidth = 320;
		try {
			var res = wx.getSystemInfoSync();
			windowWidth = res.windowWidth;
		} catch (e) {
			console.error('getSystemInfoSync failed!');
		}
			
		this.bar = new wxCharts({
			canvasId: 'areaCanvas',
			type: 'area',
			categories: ['1', '2', '3', '4', '5', '6'],
			animation: true,
			series: [{
				name: '成交量1',
				data: [32, 45, null, 56, 33, 34],
				format: function (val) {
					return val.toFixed(2) + '万';
				}
			}],
			yAxis: {
				title: '成交金额 (万元)',
				format: function (val) {
					return val.toFixed(2);
				},
				min: 0,
					fontColor: '#8085e9',
					gridColor: '#8085e9',
					titleFontColor: '#f7a35c'
				},
				xAxis: {
					fontColor: '#7cb5ec',
					gridColor: '#7cb5ec'
				},
				extra: {
					legendTextColor: '#cb2431'
				},
				width: windowWidth,
				height: 200
			});
		},
		methods: {
			touchHandler: function (e) {
				console.log(this.bar.getCurrentDataIndex(e));
				this.bar.showToolTip(e);
			}   
		}
	}