Products

Import from XLSX

Import from XLSX

The JSS parser is a JavaScript plugin that converts XLSX files to JSON format. It can be used as a standalone converter or to import XLSX files into the JSS data grid.

Documentation

Settings

Property Description
url?: string Load the XSLX from a remote URL. Bear in mind any potential CORS restrictions using this property.
locale?: string Define the decimal and thousand separator based on a locale.
loadingSpin?: boolean Enable loading spin. Default: true
parseHTML?: boolean Import embed cell style as HTML.
file?: object load from a local file. This property is used along input type='file'
onload?: function When the file is loaded.
onerror?: function Method to be called when something is wrong.

Installation

Please choose one of the following options

Using NPM

$ npm install @jspreadsheet/parser

Using a CDN

<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/parser/dist/index.min.js"></script>

Example

Loading from your local computer

<html>
<script src="https://jspreadsheet.com/v11/jspreadsheet.js"></script>
<script src="https://jsuites.net/v5/jsuites.js"></script>
<link rel="stylesheet" href="https://jspreadsheet.com/v11/jspreadsheet.css" type="text/css" />
<link rel="stylesheet" href="https://jsuites.net/v5/jsuites.css" type="text/css" />
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons" />

<script src="https://cdn.jsdelivr.net/npm/jszip@3.6.0/dist/jszip.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/parser/dist/index.min.js"></script>

<div id="spreadsheet"></div>

<input type="file" name="file" id='file' style='display:none'>

<p><input type='button' value='Load a XLSX file from my local computer' onclick="document.getElementById('file').click()"/></p>

<script>
// Set license
jspreadsheet.setLicense('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');
// Set extensions
jspreadsheet.setExtensions({ parser });
// Root
let root = document.getElementById('spreadsheet');
// Create the spreadsheet from a local file
let load = function(e) {
    // Parse XLSX file and create a new spreadsheet
    jspreadsheet.parser({
        file: e.target.files[0],
        // It would be used to updated the formats only
        locale: 'en-GB',
        onload: function(config) {
            jspreadsheet(root, config);
        },
        onerror: function(error) {
            alert(error);
        }
    });
}
document.getElementById("file").onchange = (e) => load(e)
</script>
</html>

import React, { useRef } from "react";
import { jspreadsheet } from "@jspreadsheet/react";
import parser from "@jspreadsheet/parser";

import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

// Set license
jspreadsheet.setLicense("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");

// Set extensions
jspreadsheet.setExtensions({ parser });

export default function App() {
    // Spreadsheet array of worksheets
    const spreadsheet = useRef(null);
    const inputRef = useRef(null);

    // Create the spreadsheet from a local file
    const load = function (e) {
        // Parse XLSX file and create a new spreadsheet
        jspreadsheet.parser({
            file: e.target.files[0],
            // It would be used to update the formats only
            locale: "en-GB",
            onload: function (config) {
                jspreadsheet(spreadsheet.current, config);
            },
            onerror: function (error) {
                alert(error);
            },
        });
    };

    // Render component
    return (
        <>
            <div ref={spreadsheet}></div>
            <input
                ref={inputRef}
                id="file"
                type="file"
                name="file"
                onChange={load}
                style={{ display: "none" }}
            />
            <input
                type="button"
                value="Load a XLSX file from my local computer"
                onClick={() => inputRef.current.click()}
            />
        </>
    );
}

<template>
  <div ref="spreadsheet"></div>
  <input
    type="file"
    name="file"
    ref="fileInput"
    @change="loadFile"
    style="display: none"
  />
  <input
    type="button"
    value="Load a XLSX file from my local computer"
    @click="triggerFileInput"
  />
</template>
  
<script>
import { jspreadsheet } from "@jspreadsheet/vue";
import parser from "@jspreadsheet/parser";

import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

jspreadsheet.setLicense('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');

jspreadsheet.setExtensions({ parser });

export default {
  methods: {
    triggerFileInput() {
      this.$refs.fileInput.click();
    },
    loadFile(e) {
      const spreadsheetEl = this.$refs.spreadsheet;
      jspreadsheet.parser({
        file: e.target.files[0],
        locale: "en-GB",
        onload: function (config) {
          jspreadsheet(spreadsheetEl, config);
        },
        onerror: function (error) {
          alert(error);
        },
      });
    },
  },
};
</script>

import { Component, ViewChild, ElementRef } from "@angular/core";
import jspreadsheet from "jspreadsheet";
import parser from "@jspreadsheet/parser";

import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ parser });

@Component({
    standalone: true,
    selector: "app-root",
    template: `<div #spreadsheet></div>
        <input #file type="file" name="file" style="display:none" />
        <input type="button" value="Load a XLSX file from my local computer" (click)="this.file.click()"/>`
})
export class AppComponent {
    @ViewChild("spreadsheet") spreadsheet: ElementRef;
    @ViewChild("file") file: ElementRef;

    ngAfterViewInit() {
        let spreadsheet = this.spreadsheet.nativeElement;
        // Add event to the file input
        this.file.nativeElement.onchange = function (e) {
            // Parse XLSX file and create a new spreadsheet
            jspreadsheet.parser({
                file: e.target.files[0],
                locale: "en-GB",
                onload: function (config) {
                    jspreadsheet(spreadsheet, config);
                },
                onerror: function (error) {
                    alert(error);
                }
            });
        };
    }
}

Loading from a API

<html>
<script src="https://jspreadsheet.com/v11/jspreadsheet.js"></script>
<script src="https://jsuites.net/v5/jsuites.js"></script>
<link rel="stylesheet" href="https://jspreadsheet.com/v11/jspreadsheet.css" type="text/css" />
<link rel="stylesheet" href="https://jsuites.net/v5/jsuites.css" type="text/css" />
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons" />

<script src="https://cdn.jsdelivr.net/npm/jszip@3.6.0/dist/jszip.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/parser@5.1.6/dist/index.min.js"></script>


<div id="jspreadsheet"></div>

<script>
// Set license
jspreadsheet.setLicense('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');
// Set extensions
jspreadsheet.setExtensions({ parser });

const afterChanges = (worksheet) => {
    // Get the updated data from the worksheet
    let data = worksheet.getData();
    // Do something when the user changes the data 
}

fetch('<xlsx_file_url>')
    .then(response => response.blob())
    .then(blob => {
        jspreadsheet.parser({
            file: blob,
            onload: function (config) {
                // You can intercept the configuration and add JavaScript events
                config.afterChanges = afterChanges;
                // Create the spreadsheet
                jspreadsheet(document.getElementById("jspreadsheet"), config);
            },
        });
});
</script>
</html>

import React, { useRef, useEffect } from "react";
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/react";
import parser from "@jspreadsheet/parser";
import { Client } from "./api/Client";

jspreadsheet.setLicense('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');
jspreadsheet.setExtensions({ parser });

export default function App() {
    const spreadsheet = useRef();

    const afterChanges = (worksheet) => {
        // Get the updated data from the worksheet
        let data = worksheet.getData();
        // Do something when the user changes the data 
    }

    useEffect(() => {
        const client = new Client('<xlsx_file_url>');
        client.samplefilebytes().then((response) => {
            const byteArray = Base64ToByteArray(response);
            const blob = new Blob([byteArray], {
                type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
            });

            // Jspreadsheet parser can receive a blob to extract the configuration, them create the spreadsheet
            jspreadsheet.parser({
                file: blob,
                onload: function (config) {
                    // You can intercept the configuration and add JavaScript events
                    config.afterChanges = afterChanges;
                    // Create the spreadsheet
                    jspreadsheet(spreadsheet, config);
                },
            });
        });
    })

    return <div ref={spreadsheet}/>;
}

<template>
    <div ref="root"></div>
</template>

<script>
import { jspreadsheet } from "@jspreadsheet/vue";
import parser from "@jspreadsheet/parser"

// Define the grid license
jspreadsheet.setLicense('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');

// Define the grid extensions
jspreadsheet.setExtensions({ parser });

const afterChanges = (worksheet) => {
    // Get the updated data from the worksheet
    let data = worksheet.getData();
    // Do something when the user changes the data 
}

export default {
    mounted() {
        fetch('<xlsx_file_url>')
            .then(response => response.blob())
            .then(blob => {
                jspreadsheet.parser({
                    file: blob,
                    onload: function (config) {
                        // You can intercept the configuration and add JavaScript events
                        config.afterChanges = afterChanges;
                        // Create the spreadsheet
                        jspreadsheet(this.$refs.root, config);
                    },
                });
            })
    },
}
</script>

import { Component, ViewChild, ElementRef } from "@angular/core";
import jspreadsheet from "jspreadsheet";
import parser from "@jspreadsheet/parser";

import "jspreadsheet/dist/jspreadsheet.css"
import "jsuites/dist/jsuites.css"

// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

jspreadsheet.setExtensions({ parser });

// Create component
@Component({
    standalone: true,
    selector: "app-root",
    template: `<div #spreadsheet></div>`,
})
export class AppComponent {
    @ViewChild("spreadsheet") spreadsheet: ElementRef;
    // Worksheets
    worksheets: jspreadsheet.worksheetInstance[];
    // Create a new data grid
    ngAfterViewInit() {
        const afterChanges = (worksheet) => {
            // Get the updated data from the worksheet
            let data = worksheet.getData();
            // Do something when the user changes the data 
        }
        
        fetch('<xlsx_file_url>')
            .then(response => response.blob())
            .then(blob => {
                let root = this.spreadsheet.nativeElement;

                jspreadsheet.parser({
                    file: blob,
                    onload: function (config) {
                        // You can intercept the configuration and add JavaScript events
                        config.afterChanges = afterChanges;
                        // Create the spreadsheet
                        jspreadsheet(root, config);
                    },
                });
        });
    }
}

Backend Import

From version Jspreadsheet version 11 you can generate XLSX files on your backend as the example below.

const { readFile } = require('node:fs/promises');
const jspreadsheet = require('jspreadsheet');
const formula = require('@jspreadsheet/formula-pro');
const parser = require('@jspreadsheet/parser');
const { JSDOM } = require("jsdom");

// DOMParser is mandatory to run the parser in the backend
global.DOMParser = new JSDOM().window.DOMParser;

// Defined the license
jspreadsheet.setLicense({
    clientId: 'your-client-id',
    licenseKey: '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'
});

// Parser and formula
jspreadsheet.setExtensions({ formula, parser });

(async () => {
    const file = await readFile('./list.xlsx'); // Your local XLSX file

    jspreadsheet.parser({
        file: file,
        onload: function(result) {
            // Create a virtual instance
            let test = jspreadsheet(null, result);
            // Get the data calculated
            console.log(test[0].getData(null, true));
        }
    });
})();