uniapp折线图uchart

导入插件

一个页面两个折线图

html

<view class="bg-white radius-10 mg-20 pd-20">
			<view class="flex">
				<view class="u-font-28 text-center w100 mtb-30">最近一周收益</view>
			</view>
			<canvas canvas-id="canvasLineA" id="canvasLineA" class="charts" @touchstart="touchLineA"></canvas>
		</view>
		<view class="bg-white radius-10 mg-20 pd-20">
			<view class="flex">
				<view class="u-font-28 text-center w100 mtb-30">持币收益率</view>
			</view>
			<canvas canvas-id="canvasLineB" id="canvasLineB" class="charts" @touchstart="touchLineB"></canvas>
		</view>

js

	import uCharts from '../../js_sdk/u-charts/u-charts/u-charts.js';
	var canvaLineA=null;
	var canvaLineB=null;

				// data
				cWidth: '',
				cHeight: '',
				pixelRatio: 1,
				chartData: {
					categories: ['2012', '2013', '2014', '2015', '2016', '2017','2018','2019'],
					series: [{
						name: '成交量A',
						data: [35, 20, 25, 37, 4, 20,22,10],
						color: '#000000'
					}, {
						name: '成交量B',
						data: [70, 40, 65, 100, 44, 68,55,11]
					}, {
						name: '成交量C',
						data: [100, 80, 95, 150, 112, 132,55,66]
					}]
				},
				chartData1: {
					categories: ['2012', '2013', '2014', '2015', '2016', '2017','2018','2019','2017','2018','2019'],
					series: [{
						name: '成交量A',
						data: [35, 20, 25, 37, 4, 20,22,10, 20,22,10],
						color: '#000000'
					}, {
						name: '成交量B',
						data: [70, 40, 65, 100, 44, 68,55,11, 20,22,10]
					}, {
						name: '成交量C',
						data: [100, 80, 95, 150, 112, 132,55,66, 20,22,10]
					}]
				}

// onLoad
		onLoad() {
			this.cWidth = uni.upx2px(690);
			this.cHeight = uni.upx2px(400);
			this.showLineA("canvasLineA", this.chartData);
			this.showLineB("canvasLineB", this.chartData1);
		},

//methods
	//折线一
	showLineA(canvasId, chartData) {
				var _self = this;
				canvaLineA = new uCharts({
					$this: _self,
					canvasId: canvasId,
					type: 'line',
					fontSize: 11,
					legend: {
						show: true
					},
					dataLabel: false,
					dataPointShape: true,
					background: '#FFFFFF',
					pixelRatio: _self.pixelRatio,
					categories: chartData.categories,
					series: chartData.series,
					animation: true,
					xAxis: {
						type: 'grid',
						gridColor: '#CCCCCC',
						gridType: 'dash',
						dashLength: 8
					},
					yAxis: {
						gridType: 'dash',
						gridColor: '#CCCCCC',
						dashLength: 8,
						splitNumber: 5,
						min: 10,
						max: 180,
						format: (val) => {
							return val.toFixed(0) + '元'
						}
					},
					width: _self.cWidth * _self.pixelRatio,
					height: _self.cHeight * _self.pixelRatio,
					extra: {
						line: {
							type: 'straight'
						}
					}
				});

			},
			touchLineA(e) {
				canvaLineA.showToolTip(e, {
					format: function(item, category) {
						return category + ' ' + item.name + ':' + item.data
					}
				});
			},
			//折线二
			showLineB(canvasId, chartData) {
				var _self = this;
				canvaLineB = new uCharts({
					$this: _self,
					canvasId: canvasId,
					type: 'line',
					fontSize: 11,
					legend: {
						show: true
					},
					dataLabel: false,
					dataPointShape: true,
					background: '#FFFFFF',
					pixelRatio: _self.pixelRatio,
					categories: chartData.categories,
					series: chartData.series,
					animation: true,
					xAxis: {
						type: 'grid',
						gridColor: '#CCCCCC',
						gridType: 'dash',
						dashLength: 8
					},
					yAxis: {
						gridType: 'dash',
						gridColor: '#CCCCCC',
						dashLength: 8,
						splitNumber: 5,
						min: 10,
						max: 180,
						format: (val) => {
							return val.toFixed(0) + '元'
						}
					},
					width: _self.cWidth * _self.pixelRatio,
					height: _self.cHeight * _self.pixelRatio,
					extra: {
						line: {
							type: 'straight'
						}
					}
				});

			},
			touchLineB(e) {
				canvaLineB.showToolTip(e, {
					format: function(item, category) {
						return category + ' ' + item.name + ':' + item.data
					}
				});
			}