How to export data to excel using react libraries

问题

I am using react-html-to-excel to convert my table to excel but what I want is to not to export the first column to excel i.e the first column should not exported to excel i have gone through the documentation of this library i am using but haven't found any thing

My code

 <div className="App">
      <ReactHTMLTableToExcel
        id="test-table-xls-button"
        className="download-table-xls-button"
        table="table-to-xls"
        filename="test"
        sheet="tablexls"
        buttonText="Download as XLS"
      />
      <table id="table-to-xls">
        <thead>
          <tr>
            <th>Firstname</th>
            <th>Lastname</th>
            <th>Age</th>
          </tr>
        </thead>
        <tbody>
          {data.map(item => (
            <tr>
              <td>{item.firstname}</td>
              <td>{item.lastname}</td>
              <td>{item.age}</td>
            </tr>
          ))}
        </tbody>
      </table>
    </div>

Link of codesand box full code

If it is not supported in this library then I am open to use any other library which do these kind of stuff.

回答1:

I can propose the following two modules since I have already used them successfully in production (with custom columns also):

react-data-export
react-csv

And a third one, after a quick search, which looks promising (I haven't used it though)

react-export-excel

The library that you are currently using does not support the removal of columns in the excel file according to this issue, which also proposes a fourth option:

react-csv-creator

EDIT: Ok, I have created two examples. The first can be found here and uses my 2^nd proposal, react-csv

The second is the following, which uses my 3^rd proposal, react-export-excel

2^nd EDIT: I have updated both examples, the columns now are defined from your object's structure, and two ways of removing the unwanted column are proposed (by key-value firstname or by index - the 1^st one).

Please take into account that the above methods will work successfully if the objects' structure is consistent in your data (each entry should have the same columns).

The camelCase method that I have used in both examples was taken from here.

import React from "react";
import ReactDOM from "react-dom";
import "./styles.css";
import ReactExport from "react-export-excel";
const ExcelFile = ReactExport.ExcelFile;
const ExcelSheet = ReactExport.ExcelFile.ExcelSheet;
const ExcelColumn = ReactExport.ExcelFile.ExcelColumn;

function App () {

    const data = [
        { firstname: "jill", lastname: "smith", age: 22 },
        { firstname: "david", lastname: "warner", age: 23 },
        { firstname: "nick", lastname: "james", age: 26 }
    ];

    const camelCase = (str) =>  {
        return str.substring(0, 1).toUpperCase() + str.substring(1);
    };

    const filterColumns = (data) => {
        // Get column names
        const columns = Object.keys(data[0]);

        // Remove by key (firstname)
        const filterColsByKey = columns.filter(c => c !== 'firstname');

        // OR use the below line instead of the above if you want to filter by index
        // columns.shift()

        return filterColsByKey // OR return columns
    };

    return (
        <div className="App">
            <ExcelFile filename="test">
                <ExcelSheet data={data} name="Test">
                    {
                        filterColumns(data).map((col)=> {
                            return <ExcelColumn label={camelCase(col)} value={col}/>
                        })
                    }
                </ExcelSheet>
            </ExcelFile>
            <table id="table-to-xls">
                <thead>
                <tr>
                    <th>Firstname</th>
                    <th>Lastname</th>
                    <th>Age</th>
                </tr>
                </thead>
                <tbody>
                {data.map(item => {
                    return (
                        <tr>
                            <td>{item.firstname}</td>
                            <td>{item.lastname}</td>
                            <td>{item.age}</td>
                        </tr>
                    );
                })}
                </tbody>
            </table>
        </div>
    );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

回答2:

You can create a simple hack to manipulate the table HTML code by overriding the ReactHTMLTableToExcel.format function which gets the table HTML to format the XLS document.

ReactHTMLTableToExcel.format = (s, c) => {
  // If there is a table in the data object
  if (c && c['table']) {
    // Get the table HTML
    const html = c.table;

    // Create a DOMParser object
    const parser = new DOMParser();

    // Parse the table HTML and create a text/html document
    const doc = parser.parseFromString(html, 'text/html');

    // Get all table rows
    const rows = doc.querySelectorAll('tr');

    // For each table row remove the first child (th or td)
    for (const row of rows) row.removeChild(row.firstChild);

    // Save the manipulated HTML table code
    c.table = doc.querySelector('table').outerHTML;
  }

  return s.replace(/{(\w+)}/g, (m, p) => c[p]);
};

And you've got the table HTML filtered and with the first column removed.

You can check this working in this Stackblitz project.

来源：https://stackoverflow.com/questions/61316889/how-to-export-data-to-excel-using-react-libraries

标签

javascript

excel

reactjs