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1. 使用github上的echarts-for-weixin
2. 把此文件夹放在项目的components文件夹下
taro+vue项目,ec-canvas是原生小程序,也无妨,一样放下边。
3. 在 report/index.vue 页面中需要使用echarts,在 report/index.config.js 中加入以下代码
export default {
usingComponents: {
"ec-canvas": "../../components/ec-canvas/ec-canvas"
}
}
4. 在 report/index.vue 页面中需要引入
import * as echarts from '../../components/ec-canvas/echarts'
5. 在 report/index.vue 页面中使用组件
<!-- :force-use-old-canvas="true" 开发时加上防止不随页面滚动,但是上到环境要去掉-->
<view class="myChart" style="width: 100%; height: 300px">
<ec-canvas
id="mychart-dom-line"
canvas-id="mychart-line"
:ec="ec"
:force-use-old-canvas="true"
></ec-canvas>
</view>
// 图表配置 ec: { onInit: this.initChart, }, chart: null, chartOptions: { color: ['#91CC75', '#F7B500', '#FF3333', '#0091FF'], legend: {}, grid: { left: '3%', right: '3%', top: '90', bottom: '2%', containLabel: true }, tooltip: { trigger: 'axis', position: ['30%', '30%'], backgroundColor: 'rgba(255, 255, 255, 0.6)', axisPointer: { type: 'cross', label: { backgroundColor: '#6a7985', }, }, }, xAxis: { type: 'category', boundaryGap: false}, yAxis: { type: 'value', name: '单位()', }, series: [ { type: 'line', stack: 'Total', areaStyle: {} }, { type: 'line', stack: 'Total', areaStyle: {} }, { type: 'line', stack: 'Total', areaStyle: {} }, { type: 'line', stack: 'Total', areaStyle: {} } ], dataset: { source: [ ['product', '图例1', '图例2', '图例3', '图例4'], ['1月', 43.3, 85.8, 93.7, 100], ['2月', 83.1, 73.4, 55.1, 60], ] } }, // 初始化 initChart(canvas, width, height, dpr) { this.chart = echarts.init(canvas, null, { width: width, height: height, devicePixelRatio: dpr, // 像素 }) canvas.setChart(this.chart) this.chart.setOption(this.chartOptions) // 获取接口数据 this._getApi() return this.chart }, // 更新 update() { this.chartOptions.dataset.source = [ [ 'product', '图例1', '图例2', '图例3', '图例4' ], ...数组集合, ] this.chart.setOption(this.chartOptions) }, _getApi() { api(params).then(res => { this.chartOptions.dataset.source = [ [ 'product', '图例1', '图例2', '图例3', '图例4' ], ...res.data, ] // 更新chart this.chart.setOption(this.chartOptions) }) },
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