Papa parse assign variable on complete

Question

I'm uploading a file using Papa Parse and having trouble assigning the let data variable within complete. The data variable returns undefined. Can someone please explain what I'm doing wrong here?

handleCSVInputChange(event) {
  event.preventDefault();
  let data;

  const file = event.target.files[0];

  Papa.parse(file, {
    header: true,
    complete: function(results, file) {
      if (results) {
        data = results.data;
      }
    }
  })

  if (data) {
    console.log('p', data);
  }
}

does the results.data, contain anything when you console.log — Paul McLoughlin, Mar 09 '18 at 00:48
Yes. If I console.log results.data within the complete function it logs an array of data — bp123, Mar 09 '18 at 00:51
https://stackoverflow.com/questions/26266459/retrieve-parsed-data-from-csv-in-javascript-object-using-papa-parse Sounds similar to this question. — Paul McLoughlin, Mar 09 '18 at 01:00

score -1 · Answer 1 · edited Sep 14 '18 at 16:42

-1

You have used let to declare data, let usually have block scope, try using var:

var data;

Instead of:

let data;

edited Sep 14 '18 at 16:42

Matheus Lacerda

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answered Sep 14 '18 at 16:15

Pratik Padhariya

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var doesn't work either – Nathan Jul 22 '22 at 03:31

Papa parse assign variable on complete

1 Answers1