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webpack+react实现echarts可视化配置

2019年01月20日  | 移动技术网IT编程  | 我要评论

先上效果

开发环境要求

需要事先安装node及npm

前期准备

1.创建文件夹react-echarts-editor
2.在项目根目录(以下称根目录)下创建src目录
3.在项目根目录下创建dist目录
4.在src目录下创建app.js文件(该文件就来一个react-echarts版的hello world)

import react from 'react';
import reactdom from 'react-dom';
import reactecharts from "echarts-for-react";

class echartseditor extends react.component{
    constructor(props) {
        super(props);
        this.state = {
            echartsoption:  {
                xaxis: {
                    type: 'category',
                    data: ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun']
                },
                yaxis: {
                    type: 'value'
                },
                series: [{
                    data: [820, 932, 901, 934, 1290, 1330, 1320],
                    type: 'line'
                }]
            }
        };
    }
    render(){
        return(
            <div>
                <reactecharts option={this.state.echartsoption} />
            </div>
    );
    }
}
reactdom.render(<echartseditor/>,document.getelementbyid("container"));

5.在dist目录下创建文件

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>title</title>
</head>
<body>
<div id="container"></div>
</body>
<script src="bundle.js"></script>
</html>

6.在根目录下创建使用命令创建package.json

npm init -y

7.在根目录下创建使用命令安装webpack、babel、react、echarts 、lodash

npm install webpack webpack-cli --save-dev
npm install babel-preset-flow babel-preset-env babel-preset-stage-1 --save-dev 
npm install react react-dom echarts echarts-for-react lodash --save

安装完后package.json如下:

{
  "name": "react-echarts-editor",
  "version": "0.0.1",
  "dependencies": {
    "echarts": "^4.2.0-rc.2",
    "echarts-for-react": "^2.0.15-beta.0",
    "lodash": "^4.17.11",
    "react": "^16.7.0",
    "react-dom": "^16.7.0"
  },
  "devdependencies": {
    "babel-preset-env": "^1.7.0",
    "babel-preset-flow": "^6.23.0",
    "babel-preset-stage-1": "^6.24.1",
    "webpack": "^4.28.4",
    "webpack-cli": "^3.2.1"
  }
}

8.在根目录下创建webpack.config.js

const path = require('path');
module.exports = {
    entry: './src/app.js',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    'module': {
        'rules': [
            {
                'test': /\.(js|jsx)?$/,
                'exclude': /node_modules/,
                use: [{
                    loader: "babel-loader",
                    options: {presets:["env","flow","react","es2015","stage-1"]}
                }]
            }
        ]
    }
}

 9.项目结构最后如下:

测试项目

在根目录下执行:

npx webpack

用浏览器打开dist目录下的如下则成功:

以上简单的react+webpack架构就完成了。

编写一些工具函数

createorset函数接收echarts的option,propchain为属性链，value为要设置的值(不懂的可以先用)

createorset=(echartsoption,propchain,value)=>
    {
        if(_.isstring(value)||_.isboolean(value)||_.isnumber(value)||_.isarray(value)) {
            _.set(echartsoption, propchain, value);
        }else if(_.isobject(value)){
            if(_.get(echartsoption,propchain)===undefined){
                _.set(echartsoption, propchain, value);
            }else{
                let objbefore = _.get(echartsoption,propchain);
                let objafter = {...objbefore,...value};
                _.set(echartsoption, propchain, objafter);
            }
        }
        return echartsoption;
    }
    createorsetprop=(propchain,value)=>
    {
        let echartsoption = _.clonedeep(this.state.echartsoption);
        echartsoption=this.createorset(echartsoption,propchain,value);
        this.setstate({echartsoption: echartsoption});
    }

编写属性配置界面

<div style={{width:'50%',float:'left'}}>
    <input type="text"  style={{'width': '100%',float:'left'}} placeholder="输入图表标题" value={_.get(this.state.echartsoption,'title.text','')} onchange={e=>this.createorsetprop('title.text',e.target.value)} />
    <input type="range" style={{'width': '100%',float:'left'}} defaultvalue='60'    min="1" max="100" onchange={(e)=>{this.createorsetprop('grid.top',e.target.value)}}/>
    <input type="range" style={{'width': '100%',float:'left'}} defaultvalue='60'    min="1" max="100" onchange={(e)=>{this.createorsetprop('grid.bottom',e.target.value)}}/>
    <input type="range" style={{'width': '100%',float:'left'}} defaultvalue='10'   min="1" max="100" onchange={(e)=>{this.createorsetprop('grid.left',e.target.value+'%')}}/>
    <input type="range" style={{'width': '100%',float:'left'}} defaultvalue='10'  min="1" max="100" onchange={(e)=>{this.createorsetprop('grid.right',e.target.value+'%')}}/>
</div>

 

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