Arrays React将数据推送到数组的对象中
如何将导入的数据从importFile.js获取到dataTable.js 尝试使用此函数将导入数据中的嵌套数组从importFile.js更改为数组对象Arrays React将数据推送到数组的对象中,arrays,reactjs,object,import-from-excel,Arrays,Reactjs,Object,Import From Excel,如何将导入的数据从importFile.js获取到dataTable.js 尝试使用此函数将导入数据中的嵌套数组从importFile.js更改为数组对象 const newArray = [data].map( ([firstName, lastName, issueCount, dateOfBirth]) => ({ firstName, lastName, issueCount, dateOfBirth }) ); 然后使用以下工具推送到
const newArray = [data].map(
([firstName, lastName, issueCount, dateOfBirth]) => ({
firstName,
lastName,
issueCount,
dateOfBirth
})
);
然后使用以下工具推送到dataTable.js:
data.rows.push(newArray);
在React中,正确的方法是什么
预期结果是获取导入的数据,以显示在此表中:
您要做的是使DataTable组件成为Reader组件的子组件。对于datatable组件中datatable的rows属性,需要Reader组件中的object数组。正如你所说的,你是一个初学者,所以最好从反应挂钩开始,因为它很容易 读卡器组件
import React, {useState} from "react";
import CSVReader from "react-csv-reader";
import DatatablePage from "./dataTable";
import "../index.css";
const Reader = () => {
const [data, setData] = useState([]);
return (
<div className="container">
<CSVReader
cssClass="react-csv-input"
label="Upload a new CSV file"
onFileLoaded={(data) => setData(data)}
/>
<DatatablePage uploadedData={data} />
</div>
);
}
export default Reader;
import React from "react";
import { MDBDataTable } from "mdbreact";
const DatatablePage = ({uploadedData}) => {
const data = {
columns: [
{
label: "First Name",
field: "name",
sort: "asc",
width: 150
},
{
label: "Last Name",
field: "surname",
sort: "asc",
width: 270
},
{
label: "Issue count",
field: "issuecount",
sort: "asc",
width: 200
},
{
label: "Date of birth",
field: "dateofbirth",
sort: "asc",
width: 100
}
],
rows: []
};
// we append the passed props in the rows. read about spread operator if unaware of it.
const datatableProps = {...data, rows: uploadedData};
return <MDBDataTable striped bordered hover uploadedData={uploadedData} data={datatableProps} />;
};
export default DatatablePage;
import React,{useState}来自“React”;
从“react csv reader”导入CSVReader;
从“/dataTable”导入DatatablePage;
导入“./index.css”;
常量读取器=()=>{
const[data,setData]=useState([]);
返回(
setData(数据)}
/>
);
}
导出默认读取器;
DatatablePage组件
import React, {useState} from "react";
import CSVReader from "react-csv-reader";
import DatatablePage from "./dataTable";
import "../index.css";
const Reader = () => {
const [data, setData] = useState([]);
return (
<div className="container">
<CSVReader
cssClass="react-csv-input"
label="Upload a new CSV file"
onFileLoaded={(data) => setData(data)}
/>
<DatatablePage uploadedData={data} />
</div>
);
}
export default Reader;
import React from "react";
import { MDBDataTable } from "mdbreact";
const DatatablePage = ({uploadedData}) => {
const data = {
columns: [
{
label: "First Name",
field: "name",
sort: "asc",
width: 150
},
{
label: "Last Name",
field: "surname",
sort: "asc",
width: 270
},
{
label: "Issue count",
field: "issuecount",
sort: "asc",
width: 200
},
{
label: "Date of birth",
field: "dateofbirth",
sort: "asc",
width: 100
}
],
rows: []
};
// we append the passed props in the rows. read about spread operator if unaware of it.
const datatableProps = {...data, rows: uploadedData};
return <MDBDataTable striped bordered hover uploadedData={uploadedData} data={datatableProps} />;
};
export default DatatablePage;
从“React”导入React;
从“mdbreact”导入{MDBDataTable};
常量DatatablePage=({uploadedData})=>{
常数数据={
栏目:[
{
标签:“名字”,
字段:“名称”,
排序:“asc”,
宽度:150
},
{
标签:“姓氏”,
字段:“姓氏”,
排序:“asc”,
宽度:270
},
{
标签:“发行数量”,
字段:“issuecount”,
排序:“asc”,
宽度:200
},
{
标签:“出生日期”,
字段:“出生日期”,
排序:“asc”,
宽度:100
}
],
行:[]
};
//我们将传递的道具附加到行中。如果不知道,请阅读有关spread运算符的内容。
const datatableProps={…数据,行:uploadedData};
返回;
};
导出默认数据表页面;
我们使用创建一个名为data的状态变量和它的setter。然后我们将这个状态变量传递给子组件,子组件可以渲染它。为什么要映射到刚刚创建的单个元素数组上?!Hi@jonrsharpe这是为了将嵌套数组转换为ObjectsHank@Kamlesh数组,但不幸的是,这会在上传文件后破坏表中的排序功能。如何在React应用程序中修复此问题?