exceljs

问题 So according to the offical documentation i should be able to read an excel document using: // read from a file var workbook = new Excel.Workbook(); workbook.xlsx.readFile(filename) .then(function() { // use workbook }); // pipe from stream var workbook = new Excel.Workbook(); stream.pipe(workbook.xlsx.createInputStream()); I have the following document: What i need to do is basicly to load each row into an object: var excelObject = {competence1: '', competence2: ''} And then save it into an

问题 I had created an Excel file at the backend (Express JS) using Exceljs npm module. I have it stored in a temp directory. Now I would want to send the file from the back-end to the front-end and download it there when the user clicks a button. I am struck on two things 1. How to send the file from the backend to the frontend through an HTTP POST request 2. How to then download the file in the front-end Edited content: I need the front end to be a button that appends the file to it and then

问题 I have a xlsm file with few data already in it and need to write some data and create a new xlsm file during automation. With below code the file gets created , but it becomes corrupt and unable to open. File size reduces, for ex from 8kb to 7kb. Not sure what is getting missed while writing the file. var Excel = require('exceljs'); var workbook = new Excel.Workbook(); workbook.xlsx.readFile('Book.xlsm') .then(function () { var worksheet = workbook.getWorksheet(1); var row = worksheet.getRow

问题 I have been trying to use and following the examples from this library: https://www.npmjs.com/package/exceljs#create-a-workbook I am using it on Angular 5. I always get an error graceful-fs.js:166 Uncaught TypeError: Cannot read property 'prototype' of undefined at patch (graceful-fs.js:166) From these lines of my code: import * as Excel from 'exceljs'; export class ExcelHandler { public testExcelJs() { var workBook: Excel.Workbook; var workSheet: Excel.Worksheet; workBook = new Excel

问题 Is there any way to modify existing excel file in node.js? I've looked into exceljs but it does not provide any functionality that will just modify the existing data. It seems like it will write to a new stream. Or did I miss something on exceljs? Thanks in advance. 回答1: exceljs does let you modify Excel spreadsheets. Here's an example of reading in an existing spreadsheet and writing it back out to a different file: var Excel = require('exceljs'); var workbook = new Excel.Workbook();

问题 I want to read excel file using angular code. my file is stored somewhere in my local system e.g, C:/data/test.xlsx I have already tried loading with readFile() & load() methods of exceljs. they fail to read anything, instead they give error 回答1: I found the way to read excel file from Angular code. Convert the file into ArrayBuffer and read it using exceljs Importing Exceljs in angular service / component import * as Excel from 'exceljs/dist/exceljs.min.js'; Modify tsconfig.app.json

问题 I am new in NodeJS development. I am trying to read an excel sheet and save the same excel into another file. My Excel sheet contains a RichText (Hello World) - Please see input excel file. And after save into new file, missing the entire cell value - Please see the output. Also see the below code I used to generate the excel file. input excel file: const xlsx = require('exceljs') var filename = 'File1.xlsx' var workbook = new xlsx.Workbook(); workbook.xlsx.readFile(filename).then(function

问题 I am using 'exceljs' module in my Angular project to build an Excel file. Instead of exporting it as Excel file, I would first like to convert it to PDF and then download it as such. I can successfully export and save this file to my computer: workbook.xlsx.writeBuffer().then((data) => { console.log(data); // Uint8Array console.log(data.buffer); // ArrayBuffer console.log(new Blob([data])); // Blob // code I use to export it as an Excel File const blob = new Blob([data], {type: 'application

问题 I m trying to add large number of rows to table. My Project has requirement for large table addition. Please let me know if there is a better alternative to maximize performance. Should I use Range object API? The code is as shown below. function createSampleSheet(numberOfTimes) { startTime = performance.now(); Excel.run(function (context) { var sheets = context.workbook.worksheets; var sheet = context.workbook.worksheets.getActiveWorksheet(); var expensesTable = sheet.tables.add("A1:H1",

问题 I am generating a .xlsx file and then place it into "../web.browser/app/cheques.xlsx" . As I understand it is an equivalent of public folder inside the build. The problem is that I can't manage to make it available for download. This is a fragment of code in server method, where I place a file into that place: workbook.xlsx.writeFile("../web.browser/app/cheques.xlsx") .then(function() { console.log('done'); }); So should I use fs or Picker.route to do the job? 回答1: It's not advisable to do