CODEWITHSUNDEEP
node.jsapipromiseasync-await
Sudhakar
Sudhakar

Reputation: 585

Nodejs promise async/await not working properly

Not getting api response of 3500 records inside the promise method. If I call api using setTimeout(), it is working and getting all the data.

Please find the sample code below, (calling apiCall in async method only)

let data = await apiCall();

function apiCall(){
   return new Promise((resolve,reject)=>{
      let options = {method:'get'}
      fetch('http://example.com/getData',options).then(data => {
         resolve(data);
      });
   });
}

Upvotes: 3

Views: 1242

Answers (2)

1565986223
1565986223

Reputation: 6718

This line here, let data = await apiCall();, is invalid if you're not calling inside async function becuase await is valid only inside async function.

The proper syntax for using async/await is:

async function myFunc() {
  let result = await getSomething()
  ...
}

Also fetch API supports Promise, so in your code you could do:

// note async keyword
async function apiCall(){
  let options = {method:'get'}
  try {
    let response = await fetch('http://example.com/getData',options) // response is also a promise so
    let data = await response.json(); // data contains the result
    console.log(data);
  } catch (err) {
    console.error(err)
  }
}

Say if you do return data in your apiCall function then the result is also wrapped in promise by async function. So you'll have to:

apiCall().then(result => console.log(result)). And again async/await usage is above ^

Upvotes: 1

Samiul Alam
Samiul Alam

Reputation: 2434

let data = await apiCall();

function apiCall(){
   let options = {method:'get'};
   return fetch('http://example.com/getData', options);
}

try like this and it should work fine.

Upvotes: 1

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