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SpreadJS Documentation / Developer's Guide / JavaScript Frameworks / SpreadJS with React / Excel IO Element
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    Excel IO Element
    In This Topic

    Using the Excel IO element in SpreadJS with React, you can quickly render and display the excel sheets on the webpages while also executing the import and export operations without any hassle.

    1. Create a React Project

      Open the Command Prompt window and type the following commands:

      npm install -g create-react-app
      create-react-app quick-start
      cd quick-start
      npm start

      After you finish, the react project will be created at the specified location in the directory. For more information on how to create a React project, refer to https://reactjs.org/docs/create-a-new-react-app.html

    2. Install SpreadJS React module in project

      Next, you need to install @grapecity/spread-sheets-react in your project using the following command:

      npm install @grapecity/spread-sheets-react
             
    3. Import SpreadJS CSS into index.js file

      Next, you need to import the SpreadJS CSS in your index.js file using the following code:

      import '@grapecity/spread-sheets/styles/gc.spread.sheets.excel2013white.css';
             
    4. Install Excel IO React Module and FileSaver React Module in the Project

      Next, you need to install the Excel I/O and file-saver modules in your project using the following commands:

      npm install @grapecity/spread-excelio
      npm install file-saver --save
             
    5. Use Excel IO in React Application

      Now, you can modify the App.js file as per your requirements. Changes will be reflected when the browser window is refreshed. As an example, you can use the sample code given below:

      This example shows how to use Excel IO elements in a React Application.

      JavaScript
      Copy Code

      import React from 'react';
      import './App.css';
      import GC from '@grapecity/spread-sheets';
      import { SpreadSheets, Worksheet } from '@grapecity/spread-sheets-react';

      // Import ExcelIO module
      import spreadExcel from '@grapecity/spread-excelio';

      // Import file-saver module
      import saveAs from 'file-saver';

      var SpreadJSKey = "xxx";
      GC.Spread.Sheets.LicenseKey = SpreadJSKey;

       

      // You need to license the ExcelIO module separately using the same license key
      spreadExcel.LicenseKey = SpreadJSKey;

      class App extends React.Component {
          constructor(props) {
              super(props);
              this.hostStyle =
                  {
                      width: '1100px',
                      height: '800px'
                  };
          }


      // Handling workbook initialized event
          workbookInit = (spread) => {
              this.setState({
                  spread: spread
              });
          }

      // Import Excel
          importFile = () => {
              var excelFile = document.getElementById("fileDemo").files[0];

              // Get an instance of IO class
              let excelIO = new spreadExcel.IO();
              excelIO.open(excelFile, (json) => {
                  this.state.spread.fromJSON(json);
              }, (e) => {
                  console.log(e);
              });
          }

      // Export Excel

          exportFile = () => {

              // Get an instance of IO class
              let excelIO = new spreadExcel.IO();
              let fileName = document.getElementById("exportFileName").value;
              if (fileName.substr(-5, 5) !== '.xlsx') {
                  fileName += '.xlsx';
              }
              var json = JSON.stringify(this.state.spread.toJSON());
              excelIO.save(json, (blob) => {
                  saveAs(blob, fileName);
              }, (e) => {
                  console.log(e);
              });

          }
          render() {
              return (
                  <div>
                      <input type="file" name="files[]" id="fileDemo" accept=".xlsx,.xls" />
                      <input type="button" id="loadExcel" value="Import" onClick={this.importFile} />
                      <input type="button" id="saveExcel" value="Export" onClick={this.exportFile} />
                      <input type="text" id="exportFileName" placeholder="Export file name" value="export.xlsx" />
                      <SpreadSheets backColor={this.spreadBackColor} hostStyle={this.hostStyle} workbookInitialized={this.workbookInit}>
                          <Worksheet>
                          </Worksheet>
                      </SpreadSheets>
                  </div>
              )
          }
      }
      export default App;