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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.
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
Install SpreadJS React modules in project
Install SpreadJS React modules in your project using the following command:
npm install @mescius/spread-sheets
npm install @mescius/spread-sheets-react
Import SpreadJS CSS into index.js file
Import the SpreadJS CSS in your index.js file using the following code:
import '@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css';
Install Excel IO React Module and FileSaver React Module in the ProjectInstall the Excel I/O and file-saver modules in your project using the following commands:
npm install @mescius/spread-excelio
npm install file-saver --save
Use Excel IO in React Application
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.
import React from 'react';
import './App.css';
import GC from '@mescius/spread-sheets';
import { SpreadSheets, Worksheet } from '@mescius/spread-sheets-react';
// Import ExcelIO module
import * as ExcelIO from "@mescius/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
ExcelIO.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 ExcelIO.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 ExcelIO.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" />
<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;