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Add multiple callback responses to array


Add multiple callback responses to array

By : Raj Patel
Date : November 21 2020, 11:01 PM
hop of those help? You can use Promise constructor new Promise(function), Promise.all() to perform task when checkForUniqueURL and checkForCustomURL callbacks have been called.
code :
function callback(value) {
  return value
}

function checkForUniqueURL(url, callback) {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
      resolve(callback(true))
    }, Math.random() * 1500)
  })
}

function checkForCustomURL(url, callback) {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
      resolve(callback(true))
    }, Math.random() * 1500)
  })
}

function checkForURLs(uniqueURL, customURL, callback) {
  var errors = [];

  return Promise.all([
    new Promise(function(resolve, reject) {
      checkForUniqueURL(uniqueURL, function(UniqueURLCallback) {
        if (UniqueURLCallback === true) {
          errors.push("This unique URL is already taken, please try another.");
        } 
        resolve()
      })
    })
  , new Promise(function(resolve, reject) {
      if (customURL.length > 0) {
        checkForCustomURL(customURL, function(customURLCallback) {
          if (customURLCallback === true) {
            errors.push("This custom URL is already taken, please try another.");
          }
          resolve()
        });
      }
    })
  ])
  .then(function() {
    console.log(errors);
    if (errors.length > 0) {
        return Promise.resolve(callback(errors));
    } else {
        return Promise.reject(callback(new Error("false")));
    }
  })
}

checkForURLs("abc", "def", callback)
  .then(function(errs) {
    console.log(errs);
  })
  .catch(function(err) {
    console.log("err:", err.message)
  })


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how to submit multiple forms simultaneously and then hide respective responses(and parse through responses in code) in a

how to submit multiple forms simultaneously and then hide respective responses(and parse through responses in code) in a


By : user3436973
Date : March 29 2020, 07:55 AM
wish helps you Ajax post. For example, use jQuery and the jQuery Form plugin.
Then something like this to submit all forms with a button click
code :
<input type="button" value="Submit all" id="submitAll">

<script type="text/javascript">
    $(document).ready(function() {
        $('#submitAll').click(function() {
            $('form').ajaxSubmit({
                success: function(responseText, statusText, xhr, $form) {
                    alert('form submitted, return status:' + statusText);
                }
            });
        });
    });
</script>
How does JavaScript/jQuery invoke callback functions on multiple ajax responses

How does JavaScript/jQuery invoke callback functions on multiple ajax responses


By : Sonal Satpalkar
Date : March 29 2020, 07:55 AM
Hope that helps In your specific case I think it will work fine (your code does something like):
code :
var j = 0;
for (var i = 0; i < 10; i++) {
    setTimeout(function () {
        console.log(j);
        j++
    }, 1000)
}
for (var i = 0; i < 10; i++) {
    setTimeout(function () {
        console.log(i);
    }, 1000)
}
NodeJS - Send multiple requests and process all responses in one callback

NodeJS - Send multiple requests and process all responses in one callback


By : JPBO
Date : March 29 2020, 07:55 AM
Hope this helps I'm trying to find a way to send multiple requests (using Express) and process all the response in one function. , You can learn more about the new js standard and use Promise.
code :
// In CALLBACK_FUNCTION_A file :
module.exports = function (req, response) {
   var promises = [CALLBACK_FUNCTION_TO_SERVICE_A(), 
      CALLBACK_FUNCTION_TO_SERVICE_B(),
      CALLBACK_FUNCTION_TO_SERVICE_C()];

   Promise.all(promises).then( function(results) {
       //results is an array
       //results[0] contains the result of A, and so on
   });
}
function asyncFunction(callback) {
   //...
   callback(result);
}
var p = new Promise(asyncFunction);
function CALLBACK_FUNCTION_TO_SERVICE_A() {
   var worker = function(callback) {
       app.get('/api/FIRST_PATH', callback);
   };

   return new Promise(worker);
}
AsyncTask Implementation using callback interface - Handle multiple call responses in single callback interface

AsyncTask Implementation using callback interface - Handle multiple call responses in single callback interface


By : saraz
Date : March 29 2020, 07:55 AM
it should still fix some issue In my Android application, I am making multiple API calls from one Activity. I am using following approach: Implementing interface in Activity and call that interface function from Async class.
code :
public interface AsyncResponse {
    //Add requestCode to identify request.  
    public void processFinish(JSONObject sb, int requestCode);
}


public class FetchData extends AsyncTask<String, Integer, JSONObject> {
    HttpURLConnection urlConnection;
    String url;
    String method;
    String payload = null;
    AsyncResponse delegate = null;
    int requestCode;

    public FetchData(String url, String method) {
        this(url, method, null);
    }

    public FetchData(String url, String method, JSONObject payload) {
        this.url = url;
        this.method = method;
        if(payload!=null){
             this.payload = payload.toString();
        }
    }

    //You can set AsyncResponse and RequestCode in constructor also.
    public FetchData setListener(AsyncResponse asyncResponse, int requestCode){
        this.delegate = asyncResponse;
        this.requestCode = requestCode;
        return this;
    }

    @Override
    protected JSONObject doInBackground(String... args) {
        ....
    }

    @Override
    protected void onPostExecute(JSONObject result) {
        super.onPostExecute(result);
        if(delegate!=null){        
            //post result with given requestCode
            this.delegate.processFinish(result, requestCode);
        }
    }
}


public class AsyncTasks extends AppCompatActivity implements AsyncResponse {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_async_tasks);

        // Make first call with request code as 1    
        new FetchData("<url 1>", "GET").setListener(this, 1).executeOnExecutor(THREAD_POOL_EXECUTOR);

        // Make second call with request code as 2
        new FetchData("<url 2>", "GET").setListener(this, 2).executeOnExecutor(THREAD_POOL_EXECUTOR);
    }

    @Override
    public void processFinish(JSONObject data, int requestCode) {
        switch(requestCode){
            case 1:
            //perform task on 1st call finish
            break;
            case 2:
            utility.showDialog(this, data.toString());
            //perform task on 2nd call finish
            break;
        }
    }
}
Trying to get multiple request responses for one callback function

Trying to get multiple request responses for one callback function


By : user3152447
Date : March 29 2020, 07:55 AM
help you fix your problem I think you've mixed things up.
getElementById is a property of the window object and it's thus accessible only within the browser context. https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementById
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