How assign value for variable inside "then"?

Asked Jan 30 '20 at 15:38

Active Feb 03 '20 at 03:35

Viewed 142 times

    const testFunc = () => {
let test = [];
    axios
      .post('test.com', {
        filters: [
          {
            comparison: 'eq',
            fieldName: 'ID',
            fieldValue: `${id}`,
          },
        ],
      }).then(({ data }) => test = data);

return test;
}

I need to write to the variable what I get in the response, but the attempt to do this ends with nothing being written to the variable

edited Feb 03 '20 at 03:35

Roamer-1888

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asked Jan 30 '20 at 15:38

Alexandr Stupak

Shouldn't the return be in side of `then`? else you are returning the test too early, as in before the promise is finished so test is still `[]` – Huangism Jan 30 '20 at 15:40
This blog post of mine might also help thinking about this problem differently: https://felix-kling.de/blog/2019/javascript-callbacks-misconceptions.html – Felix Kling Jan 30 '20 at 15:40
But in short: `return axios......then(({data}) => data)` and later: `testFunc().then(data => console.log("look it's my data!", data))`. – Felix Kling Jan 30 '20 at 15:41
@Huangism then I have to use async / await ? – Alexandr Stupak Jan 30 '20 at 15:43
the marked dupes will guide you to the holy grail – Huangism Jan 30 '20 at 15:53

How assign value for variable inside "then"?

0 Answers0