Access a variable inside an asynchron function

Asked Dec 14 '20 at 07:17

Active Dec 14 '20 at 20:00

Viewed 17 times

I do have an asynchron function. In this function I need to have the value of an variable, which is defined outside the function. How is it possible to access the variable inside the asynchron function. Thanks for your help.

var valueTest = "Hello";

doUpdate(source)
.then(myValue => {
  // do something with MyValue is working
  // How can I use the valueTest variable at this position?
  // I need it in the function doUpdateTest
  doUpdateTest(valueTest, myValue);
})

edited Dec 14 '20 at 20:00

MC Emperor

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asked Dec 14 '20 at 07:17

Harald

I assume this is JavaScript? – MC Emperor Dec 14 '20 at 07:19
Yes, this is JavaScript. – Harald Dec 14 '20 at 19:33
3

"How can I use the valueTest variable at this position?" Exactly like you did. – Aplet123 Dec 14 '20 at 20:01
As long as you use arrow functions for your callbacks, you can access the scope where the async function was called (just like you did in your example) – Cup of Java Dec 14 '20 at 20:04

Access a variable inside an asynchron function

0 Answers0