React中使用ECharts

xiaoxiao2021-02-27  19


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使用node.js的npm命令安装:

npm install echarts --save

ECharts就被下载到项目中的node_modules文件夹中,这个时候我们就可以在编写的react组件中使用ECharts了

import React, { Component } from 'react'; // 引入 ECharts 主模块 import echarts from 'echarts/dist/echarts.common'; // 引入折线图 import 'echarts/lib/chart/line'; // 引入提示框和标题组件 import 'echarts/lib/component/tooltip'; import 'echarts/lib/component/title'; export default class EchartsTest extends Component { componentDidMount() { var base = +new Date(1968, 9, 3); var oneDay = 24 * 3600 * 1000; var date = []; var data = [Math.random() * 300]; for (var i = 1; i < 20000; i++) { var now = new Date(base += oneDay); date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/')); data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1])); } // 基于准备好的dom,初始化echarts实例 var myChart = echarts.init(document.getElementById('main')); // 绘制图表 myChart.setOption({ tooltip: { trigger: 'axis', position: function (pt) { return [pt[0], '10%']; } }, title: { left: 'center', text: '大数据量面积图', }, toolbox: { feature: { dataZoom: { yAxisIndex: 'none' }, restore: {}, saveAsImage: {} } }, xAxis: { type: 'category', boundaryGap: false, data: date }, yAxis: { type: 'value', boundaryGap: [0, '100%'] }, dataZoom: [{ type: 'inside', start: 0, end: 10 }, { start: 0, end: 10, handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z', handleSize: '80%', handleStyle: { color: '#fff', shadowBlur: 3, shadowColor: 'rgba(0, 0, 0, 0.6)', shadowOffsetX: 2, shadowOffsetY: 2 } }], series: [ { name:'模拟数据', type:'line', smooth:true, symbol: 'none', sampling: 'average', itemStyle: { normal: { color: 'rgb(255, 70, 131)' } }, areaStyle: { normal: { color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{ offset: 0, color: 'rgb(255, 158, 68)' }, { offset: 1, color: 'rgb(255, 70, 131)' }]) } }, data: data } ] }); } render() { return ( <div id="main" style={{ width: 500, height: 500}}></div> ); } }

引入主模块,引入下图所示的主模块,目录位置:import echarts from ‘echarts/dist/echarts.common’;

效果图

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