Export to Excel on Angular 4

Question

I have a data table that is dynamically populated using Angular 4. I would like to export the table to Excel. How can I achieve this in Angular 4. I am looking for .xls, not .csv.

PS: I do not want to use jquery libraries.

My application component is as follows

    <table id ="dataTable" class = "table table-hover">
  <thead>
      <tr>
          <th>Date</th>
          <th>Address</th>
          <th>Mode</th>
          <th>Distance</th>
          <th>Fare</th>
          <th></th>
      </tr>
  </thead>
  <tbody>
      <tr *ngFor="let date of dateList;let i = index">
          <td>{{date}}</td> 
          <td>{{address}}</td>
          <td>{{mode}}</td>
          <td>{{distance}}</td>
          <td>{{fare}}</td>
          <td>
             <a>Delete</a>
          </td>   
      </tr>
  </tbody>
</table>

Answer 1

You can use XLSX to export to Excel.

It will support JSON or array in Excel.

Sample code

import * as XLSX from 'xlsx';

public exportAsExcelFile(json: any[], excelFileName: string): void {
  const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(json);
  const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
  const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
  this.saveAsExcelFile(excelBuffer, excelFileName);
}

To save

private saveAsExcelFile(buffer: any, fileName: string): void {
  const data: Blob = new Blob([buffer], {
    type: EXCEL_TYPE
  });
  const today = new Date();
  const date = today.getFullYear() + '' + (today.getMonth() + 1) + '' + today.getDate() + '_';
  const time = today.getHours() + "-" + today.getMinutes() + "-" + today.getSeconds();
  const name = fileName + date + time;
  FileSaver.saveAs(data, name + EXCEL_EXTENSION);
}

Link to Corner 2+

Xlsx for corner 2+

Answer 2

For those who are still looking for a working answer.

public export() {
    const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(this.myDataModels);
    /* generate workbook and add the worksheet */
    const wb: XLSX.WorkBook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(wb, worksheet, 'Sheet1');
    /* save to file */
    XLSX.writeFile(wb, this.createFileName());
}

xlsx. https://github.com/SheetJS/js-xlsx/tree/19620da30be2a7d7b9801938a0b9b1fd3c4c4b00/demos/angular2.

Answer 3

xlsx Excel, XLSX.writeFile()

exportExcel(data: any[]){
   const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(data);
   const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
   XLSX.writeFile(workbook, 'my_file.xls', { bookType: 'xls', type: 'buffer' });
}

Answer 4

, microsoft Javascript, Angular,

Answer 5

npm i file-saver
npm i xlsx

Excel ExcelService ng g s excel/ExcelService

import { Injectable } from '@angular/core';
import * as FileSaver from 'file-saver';
import * as XLSX from 'xlsx';
const EXCEL_TYPE = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8';
const EXCEL_EXTENSION = '.xlsx';
@Injectable({
  providedIn: 'root'
})
export class ExcelServiceService {
  constructor() { }
  public exportAsExcelFile(json: any[], excelFileName: string): void {

    const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(json);
    console.log('worksheet',worksheet);
    const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
    const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });
    this.saveAsExcelFile(excelBuffer, excelFileName);
  }
  private saveAsExcelFile(buffer: any, fileName: string): void {
    const data: Blob = new Blob([buffer], {
      type: EXCEL_TYPE
    });
    FileSaver.saveAs(data, fileName + '_export_' + new Date().getTime() + EXCEL_EXTENSION);
  }
}

CountryInfo

export class CountryInfo {
    country: string;
    hydro: number;
    oil: number;
    gas: number;
    coal: number;
    nuclear: number;
}

Excel Angular github