Error when use a library - javascript

Question

I use js-xlsx library. I need to write an excel file. So when I defined a wb variable as excel workbook and asked js-xlsx to write it to same file

XLSX.writeFile(wb, 'out.xls');

I get an error at browser console:

require.js:900 TypeError: Cannot read property 'writeFileSync' of undefined

XLSX.writeFile turns to js-xlsx/dist/xlsx.js row 1340

_fs = require('f'+'s');

And when I paused it to debug, _fs is undefined, of cource. I can't see where I could find 'f' or 's' libs. Please help me to understand it.

Answer 1

try using XLSX.write-- writeFile function is specific to nodejs

---

• XLSX.write(wb, filename) write to binary string (->browser)

• XLSX.writeFile(wb, filename) nodeJS function

---

/* XLSX.write(wb, 'out.xls'); */

/* bookType can be 'xlsx' or 'xlsm' or 'xlsb' */
var wopts = { bookType:'xlsx', bookSST:false, type:'binary' };

var wbout = XLSX.write(workbook,wopts);

function s2ab(s) {
  var buf = new ArrayBuffer(s.length);
  var view = new Uint8Array(buf);
  for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
  return buf;
}

/* the saveAs call downloads a file on the local machine */
saveAs(new Blob([s2ab(wbout)],{type:""}), "test.xlsx")

https://github.com/SheetJS/js-xlsx#user-content-writing-workbooks