echoulen/echarts-for-react

:chart_with_upwards_trend: baidu Echarts(v3.0) components for React wrapper. 一个简单的 echarts(v3.0) 的 react 封装。

echarts-for-react

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

1. install

npm install --save echarts-for-react

How to run the demo:

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

npm install

npm start

then open http://127.0.0.1:8080/ in your browser. or see http://git.hust.cc/echarts-for-react/

2. usage

Code of a simple demo code showed below. For more example can see: http://git.hust.cc/echarts-for-react/

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} />

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} />

If you have only used bar chart (or others), you can import echarts modules manually to reduce bundle file size, e.g.

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/bar';
import 'echarts/lib/component/tooltip';

// 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} />

3. component props

• option (required, object)

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

• notMerge (required, object)

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

• lazyUpdate (required, 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

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. LICENSE

MIT@hustcc.