Angular - SheetJS - How to export HTML Table to Excel?

Question

I copied the code from this "tutorial":

function doit(type, fn, dl) {
   var elt = document.getElementById('data-table');
   var wb = XLSX.utils.table_to_book(elt, {sheet:"Sheet JS"});
   return dl ?
    XLSX.write(wb, {bookType:type, bookSST:true, type: 'base64'}) :
    XLSX.writeFile(wb, fn || ('test.' + (type || 'xlsx')));
}

So I ended up creating this method in Angular:

exportTableToExcel() {
   var type = "xlsx"
   var elt = document.getElementsByClassName('table');
   var wb = XLSX.utils.table_to_book(elt, /*{sheet:"Sheet JS"}*/);
   return XLSX.writeFile(wb, undefined || ('test.' + (type || 'xlsx')));
}

Well, on the line of the table_to_book method, I receive this exception:

table.getElementsByTagName is not a function

I also tried this tutorial, which is similar, but it's for Angular 4, not 5.

http://vinhboy.com/blog/2017/06/13/how-to-use-sheetjs-xlsx-with-angular-4-typescript-in-the-browser/

Vikas · Accepted Answer · 2018-05-22T20:48:47.043

9

Mixing Jquery with Angular is not Recommened you can use ViewChild in Angular to Access DOM Element
you can access native DOM elements that have a template reference variable.
Example
HTML

    <div class="container">
        <table class="table" #table>
//....................

Component

import {Component,ViewChild, ElementRef} from '@angular/core';
     import * as XLSX from 'xlsx';
    export class AppComponent  {
  @ViewChild('table') table: ElementRef;

ExportToExcel()
    {
      const ws: XLSX.WorkSheet=XLSX.utils.table_to_sheet(this.table.nativeElement);
      const wb: XLSX.WorkBook = XLSX.utils.book_new();
      XLSX.utils.book_append_sheet(wb, ws, 'Sheet1');

      /* save to file */
      XLSX.writeFile(wb, 'SheetJS.xlsx');

    }
    }

DEMO

edited May 22 '18 at 20:48

answered May 22 '18 at 20:23

Vikas

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is there any way that we can add styles to cell from your code? – Abhi Nov 17 '18 at 07:17
@Abhi I ain't aware of it mate I posted [this](https://stackoverflow.com/questions/50087762/export-html-table-to-excel-with-css-in-angular) question on the same but did not get any answer – Vikas Nov 17 '18 at 09:24
How to do the same for multiple table in single sheet ? – Aniket Patil Jun 02 '21 at 06:11
@Vikas, how to include images in excel - https://stackblitz.com/edit/angular-nw6hhy?file=app%2Fapp.component.html – Kumaresan Sd Apr 05 '22 at 05:02

score 1 · Answer 2 · answered May 22 '18 at 20:07

1

document.getElementsByClassName('table'); returns a NodeList, whereas getElementById('data-table'); returns a single node.

If you just want the first element with the table class, do:

var elt = document.getElementsByClassName('table')[0];

answered May 22 '18 at 20:07

user184994

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Angular - SheetJS - How to export HTML Table to Excel?

2 Answers2