Set variable equal to return data from an async function in JavaScript

Asked May 15 '18 at 15:40

Active May 15 '18 at 15:40

Viewed 18 times

I have a function that has asynchronous tasks in it

function getDroplets(key) {
    return getRequest('https://api.digitalocean.com/v2/droplets', key).then(function(response) {
        var droplets = response.droplets;
        var numDroplets = droplets.length;
        return {
            data: response,
            droplets: droplets,
            numDroplets: numDroplets
        }
    });
}

I want to take the return data from this function and store it in a variable named dropletData. But, I currently am getting undefined.

var dropletData = async(key) => {
    data = await getDroplets(key);
    return data;
};

dropletData = dropletData(api_key);

asked May 15 '18 at 15:40

Jordan Baron

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`dropletData(api_key).then(result => ...)` or `const result = dropletData(api_key)` – Jonas Wilms May 15 '18 at 15:43
Since `dropletData` is `async`, *its caller* will have to `await` *it* as well. – deceze May 15 '18 at 15:43
And `data` should not be global... – Jonas Wilms May 15 '18 at 15:44
1) Don't overwrite your function `dropletData` with the value `dropletData` 2) use `dropletData = await getDroplets(api_key)` - and put all the code that uses the variable into that `async function` where it can wait – Bergi May 15 '18 at 15:44
@JonasW. for the first one, could you complete the arrow function? – Jordan Baron May 15 '18 at 18:04
@JonasW. I have this so far, but it doesn't work `var dropletData = () => getDroplets(api_key).then(response => response);` – Jordan Baron May 15 '18 at 18:14
1

Don't try to turn something asynchronous into a synchronous thing. Thats like trying to read the newspaper of tomorrow. It just does not work. – Jonas Wilms May 15 '18 at 18:55

Set variable equal to return data from an async function in JavaScript

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