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Javascript 在数组中循环以呈现多个图表_Javascript_Arrays_Reactjs_Arraylist_Charts - Fatal编程技术网

Javascript 在数组中循环以呈现多个图表

Javascript 在数组中循环以呈现多个图表,javascript,arrays,reactjs,arraylist,charts,Javascript,Arrays,Reactjs,Arraylist,Charts,我正在react中创建一个网络应用程序,显示基于经济、社会和政治指标的数据。由于数据太大,无法在一个图表上显示(对于移动用户界面来说是一场噩梦),我决定将数据拆分为一个数组中的4个对象。我正试图找到一种方法来循环通过那个数组。这是密码 import React from 'react'; import { Bar } from 'react-chartjs-2'; import ChartDataSource from 'chartjs-plugin-datasource'; const co

我正在react中创建一个网络应用程序,显示基于经济、社会和政治指标的数据。由于数据太大,无法在一个图表上显示(对于移动用户界面来说是一场噩梦),我决定将数据拆分为一个数组中的4个对象。我正试图找到一种方法来循环通过那个数组。这是密码

import React from 'react';
import { Bar } from 'react-chartjs-2';
import ChartDataSource from 'chartjs-plugin-datasource';

const config = {
    data: {
        datasets: [
            {
                backgroundColor: 'rgba(255,99,132,0.2)',
                borderColor: 'rgba(255,99,132,1)',
                borderWidth: 1,
                hoverBackgroundColor: 'rgba(255,99,132,0.4)',
                hoverBorderColor: 'rgba(255,99,132,1)',
            },
        ],
    },

    options: {
        maintainAspectRatio: true,
        plugins: {
            datasource: {
                type: 'sheet',
                url: 'GDP1.xlsx', {/*<----- This is where the array gets looped*/}
                rowMapping: 'index',
            },
        },
        title: {
            display: true,
            text: 'GDP per country',
        },
        scales: {
            xAxes: [
                {
                    scaleLabel: {
                        display: true,
                        labelString: 'Countries',
                    },
                },
            ],
            yAxes: [
                {
                    id: '2018',
                    gridLines: {
                        drawOnChartArea: false,
                    },
                    scaleLabel: {
                        display: true,
                        labelString: 'GDP',
                    },
                },
            ],
        },
    },
};

function BarChart() {
    const graphslist = [ {/* Ths is the array i want to loop through*/}
        { url: 'GDP1.xlsx' },
        { url: 'GDP2.xlsx' },
        { url: 'GDP3.xlsx' },
        { url: 'GDP4.xlsx' },
    ];
    return (
        <div>
            <h2>GDP per country</h2>
            <Bar
                data={config.data}
                options={config.options}
                width={100}
                height={100}
                plugins={[ChartDataSource]}
            />
        </div>
    );
}

export default BarChart;
从“React”导入React;
从'react-chartjs-2'导入{Bar};
从“chartjs插件数据源”导入ChartDataSource;
常量配置={
数据:{
数据集:[
{
背景颜色:“rgba(255,99132,0.2)”,
边框颜色:“rgba(255,99132,1)”,
边框宽度:1,
hoverBackgroundColor:'rgba(255,99132,0.4)',
hoverBorderColor:'rgba(255,99132,1)',
},
],
},
选项:{
维护Aspectratio:是的,
插件:{
数据源:{
键入:“工作表”,

url:'GDP1.xlsx',{/*您可以在没有插件的情况下尝试这个

const theDatasets= (()=>{
let arr = []
      for (let i = 0; i < graphslist .length; i++) {

          arr.push(
            {
              data: graphslist [i],
              backgroundColor: 'rgba(255,99,132,0.2)',
            borderColor: 'rgba(255,99,132,1)',
            borderWidth: 1,
            hoverBackgroundColor: 'rgba(255,99,132,0.4)',
            hoverBorderColor: 'rgba(255,99,132,1)',
              label: graphslist [i],
                   
            }
          )
        }
      
      return arr
})()
const thedataset=(()=>{
设arr=[]
for(设i=0;i
在渲染上

<Bar
                data={theDatasets}
                options={config.options} // your option without plugins
                width={100}
                height={100}
                
            />