how to get callback response in promise

Asked Mar 29 '18 at 00:06

Active Mar 29 '18 at 00:14

Viewed 32 times

I'm using promise inside a promise and calling external functions to get data. The external functions using a callback to send the data back. Could someone please help how to send callback response to promise? below is my code

function processData( data ){
....
}

function getData( data ) {

   const callbacks = {
     error(e) {
      console.log('error',e)
     }
     dataReady(data){
      // I want this data to be sent back to my original promise, while which use in processData function
      return data
    }
  }
  const obj = api.init( args, callbacks);

 // TODO: 1) How can I wait this function to complete the callbacks
           2) How can I capture callbacks response 

}


new Promise( ( res, rej ) => {
const req = new Request( args );
req.send()
  .then( getData )
  .then( processData )
  .then( ( data ) => res( data ) )
  .catch( ( err ) => rej( err ) );
} );

edited Mar 29 '18 at 00:14

asked Mar 29 '18 at 00:06

Nagesh

create and return a Promise ... resolve the value – Jaromanda X Mar 29 '18 at 00:08
Thanks! Could you provide some example please? may be using my code. – Nagesh Mar 29 '18 at 00:10
https://pastebin.com/mCH5abwt - though, the rest of your code looks odd with that Promise that never resolves – Jaromanda X Mar 29 '18 at 00:11
I've updated my promise to resolve the response – Nagesh Mar 29 '18 at 00:16
@Nagesh It is `getData` that should return a promise, not the place where `getData` is used. – Bergi Mar 29 '18 at 01:03

how to get callback response in promise

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