/ Chart

A very simple echarts wrapper for React

A very simple echarts wrapper for React

echarts-for-react

A very simple echarts(v3.0 & v4.0) wrapper for react.

1. install

npm install --save echarts-for-react

# `echarts` is the peerDependence of `echarts-for-react`, you can install echarts with your own version.
npm install --save echarts

Then use it.

import ReactEcharts from 'echarts-for-react';

// render echarts option.
<ReactEcharts option={this.getOption()} />

You can run demo by:

git clone [email protected]:hustcc/echarts-for-react.git

npm install

npm start
then open [http://127.0.0.1:8080/](http://127.0.0.1:8080/) in your browser. 

2. usage

javascript

import React from 'react';
import ReactEcharts from 'echarts-for-react';  // or var ReactEcharts = require('echarts-for-react');

<ReactEcharts
  option={this.getOption()}
  notMerge={true}
  lazyUpdate={true}
  theme={"theme_name"}
  onChartReady={this.onChartReadyCallback}
  onEvents={EventsDict}
  opts={} />

typescript

import * as React from "react";
import ReactEcharts from "echarts-for-react";

<ReactEcharts
  option={this.getOption()}
  notMerge={true}
  lazyUpdate={true}
  theme={"theme_name"}
  onChartReady={this.onChartReadyCallback}
  onEvents={EventsDict}
  opts={} />

Import ECharts.js modules manually to reduce bundle size

import React from 'react';
// import the core library.
import ReactEchartsCore from 'echarts-for-react/lib/core';

// then import echarts modules those you have used manually.
import echarts from 'echarts/lib/echarts';
// import 'echarts/lib/chart/line';
import 'echarts/lib/chart/bar';
// import 'echarts/lib/chart/pie';
// import 'echarts/lib/chart/scatter';
// import 'echarts/lib/chart/radar';

// import 'echarts/lib/chart/map';
// import 'echarts/lib/chart/treemap';
// import 'echarts/lib/chart/graph';
// import 'echarts/lib/chart/gauge';
// import 'echarts/lib/chart/funnel';
// import 'echarts/lib/chart/parallel';
// import 'echarts/lib/chart/sankey';
// import 'echarts/lib/chart/boxplot';
// import 'echarts/lib/chart/candlestick';
// import 'echarts/lib/chart/effectScatter';
// import 'echarts/lib/chart/lines';
// import 'echarts/lib/chart/heatmap';

// import 'echarts/lib/component/graphic';
// import 'echarts/lib/component/grid';
// import 'echarts/lib/component/legend';
import 'echarts/lib/component/tooltip';
// import 'echarts/lib/component/polar';
// import 'echarts/lib/component/geo';
// import 'echarts/lib/component/parallel';
// import 'echarts/lib/component/singleAxis';
// import 'echarts/lib/component/brush';

import 'echarts/lib/component/title';

// import 'echarts/lib/component/dataZoom';
// import 'echarts/lib/component/visualMap';

// import 'echarts/lib/component/markPoint';
// import 'echarts/lib/component/markLine';
// import 'echarts/lib/component/markArea';

// import 'echarts/lib/component/timeline';
// import 'echarts/lib/component/toolbox';

// import 'zrender/lib/vml/vml';

// The usage of ReactEchartsCore are same with above.
<ReactEchartsCore
  echarts={echarts}
  option={this.getOption()}
  notMerge={true}
  lazyUpdate={true}
  theme={"theme_name"}
  onChartReady={this.onChartReadyCallback}
  onEvents={EventsDict}
  opts={} />

3. component props

  • option (required, object)

the echarts option config, can see http://echarts.baidu.com/option.html#title.

  • notMerge (optional, object)

when setOption, not merge the data, default is false. See http://echarts.baidu.com/api.html#echartsInstance.setOption.

  • lazyUpdate (optional, object)

when setOption, lazy update the data, default is false. See http://echarts.baidu.com/api.html#echartsInstance.setOption.

  • style (optional, object)

the style of echarts div. object, default is {height: '300px'}.

  • className (optional, string)

the class of echarts div. you can setting the css style of charts by class name.

  • theme (optional, string)

the theme of echarts. string, should registerTheme before use it (theme object format: https://github.com/ecomfe/echarts/blob/master/theme/dark.js). e.g.

// import echarts
import echarts from 'echarts';
...
// register theme object
echarts.registerTheme('my_theme', {
  backgroundColor: '#f4cccc'
});
...
// render the echarts use option `theme`
<ReactEcharts
  option={this.getOption()}
  style={{height: '300px', width: '100%'}}
  className='echarts-for-echarts'
  theme='my_theme' />
  • onChartReady (optional, function)

when the chart is ready, will callback the function with the echarts object as it's paramter.

  • loadingOption (optional, object)

the echarts loading option config, can see http://echarts.baidu.com/api.html#echartsInstance.showLoading.

  • showLoading (optional, bool, default: false)

bool, when the chart is rendering, show the loading mask.

  • onEvents (optional, array(string=>function) )

binding the echarts event, will callback with the echarts event object, and the echart object as it's paramters. e.g:

let onEvents = {
  'click': this.onChartClick,
  'legendselectchanged': this.onChartLegendselectchanged
}
...
<ReactEcharts
  option={this.getOption()}
  style={{height: '300px', width: '100%'}}
  onEvents={onEvents} />

for more event key name, see: http://echarts.baidu.com/api.html#events

  • opts (optional, object)

the opts of echarts. object, will be used when initial echarts instance by echarts.init. Document here.

<ReactEcharts
  option={this.getOption()}
  style={{height: '300px'}}
  opts={{renderer: 'svg'}} // use svg to render the chart.
/>

4. Component API & Echarts API

the Component only has one API named getEchartsInstance.

  • getEchartsInstance() : get the echarts instance object, then you can use any API of echarts.

for example:

// render the echarts component below with rel
<ReactEcharts ref={(e) => { this.echarts_react = e; }}
  option={this.getOption()} />

// then get the `ReactEcharts` use this.echarts_react

let echarts_instance = this.echarts_react.getEchartsInstance();
// then you can use any API of echarts.
let base64 = echarts_instance.getDataURL();

About API of echarts, can see http://echarts.baidu.com/api.html#echartsInstance.

You can use the API to do:

  1. binding / unbinding event.
  2. dynamic charts with dynamic data.
  3. get the echarts dom / dataURL / base64, save the chart to png.
  4. release the charts.

5. Q & A

  • How to render the chart with svg when using echarts 4.x

Use the props opts of component with renderer = 'svg'. For example:

<ReactEcharts
  option={this.getOption()}
  style={{height: '300px'}}
  opts={{renderer: 'svg'}} // use svg to render the chart.
/>

GitHub