Call multiple API in for loop and get one by one response using node js

Question

I have to call multiple API using promise all in for loop but I am getting a response in unsequential format. e.g. I have 3 rows but getting a response in 1,2,3 sequence. First getting the first-row response than 3rd row and then getting 2nd row but I need to get a response in a sequential format like (1 row,2 rows,3 rows).

result = '{"error_code":0,"err_desc":null,"data":[{"":"","name":"OTT, KATHRYN M","address":"3110 Horseshoe Trl, Glenmoore, PA","email":"","phone1":"(410) 599-2212","phone2":"(610) 827-9107","phone3":"(610) 308-4566","phone4":"(610) 506-1121","phone5":"(610) 469-0737","phone6":"(610) 942-4347","phone7":"323-7898","phone8":"(814) 371-6133","phone9":""},{"":"","name":"BELTRANTE, SUSAN E","address":"3 Rhoads Ave, Moorestown, NJ\"","email":"[email protected], [email protected],","phone1":"(856) 266-0381","phone2":"(856) 273-0869","phone3":"(609) 266-0381","phone4":"(856) 235-3933","phone5":"","phone6":"","phone7":"","phone8":"","phone9":""},{"":"","name":"Manish","address":"4895 E American Beauty Dr, Tucson, AZ 85756","email":"[email protected]","phone1":"(857) 266-0381","phone2":"(857) 273-0869","phone3":"(610) 266-0381","phone4":"(857) 235-3933","phone5":"","phone6":"","phone7":"","phone8":"","phone9":""}]}';

var i;
                for (i = 0; i < result.length; i++) 
                //for (i = 0; i <= 0; i++) 
                { 
                    var phone = result[i].phone9;
                    var name = result[i].name;
                    var address = result[i].address;
                    var email = result[i].email;
                    var phone1 = result[i].phone1;
                    var phone2 = result[i].phone2;
                    var phone3 = result[i].phone3;
                    var phone4 = result[i].phone4;
                    var phone5 = result[i].phone5;
                    var phone6 = result[i].phone6;
                    var phone7 = result[i].phone7;
                    var phone8 = result[i].phone8;
                    
                    var addressinfo = address.split(',');
                    var street = addressinfo[0];
                    var city = addressinfo[1];
                    var state = addressinfo[2];
                    var zip = addressinfo[3];
                    
                    Promise.all([
                        fetch('https://backend.mioym.properties/api/247/eppraisal?street='+street+'&zip='+zip),
                        fetch('https://backend.mioym.properties/api/247/zillow?street='+street+'&zip='+zip),
                        fetch('https://backend.mioym.properties/api/247/pennymac?address='+address),
                        fetch('https://backend.mioym.properties/api/247/chase?address='+address),
                        fetch('https://backend.mioym.properties/api/247/realtor?address='+address)

                    ]).then(function (responses) {
                        // Get a JSON object from each of the responses
                        return Promise.all(responses.map(function (response) {
                            console.log("here"+i);
                            //console.log(response.json());
                            console.log(response.url);
                            return response.json();
                        }));
                    }).then(function (data) {
                        console.log("success"+i);
                        // Log the data to the console
                        // You would do something with both sets of data here
                        console.log(data);
                    }).catch(function (error) {
                        console.log("error"+i);
                        // if there's an error, log it
                        console.log(error);
                    });
                }

So please anyone suggest me solution.

How did you check First getting the first-row response than 3rd row and then getting 2nd row — Abishek Kumar
– Abishek Kumar, Commented Nov 5, 2020 at 11:21
@AbishekKumar I am getting a response in function (data) function and I check response with manually call API response. — user11481068
– user11481068, Commented Nov 5, 2020 at 11:36

eol · Accepted Answer · 2020-11-05 11:46:22Z

1

The second Promise.all inside your then block is not necessary, as responses will already contain the resolved values. Note that Promise.all processes the requests in parallel but the resolved responses will be in order. So you can simply do:

Promise.all([
        fetch('https://backend.mioym.properties/api/247/eppraisal?street=' + street + '&zip=' + zip),
        fetch('https://backend.mioym.properties/api/247/zillow?street=' + street + '&zip=' + zip),
        fetch('https://backend.mioym.properties/api/247/pennymac?address=' + address),
        fetch('https://backend.mioym.properties/api/247/chase?address=' + address),
        fetch('https://backend.mioym.properties/api/247/realtor?address=' + address)

    ]).then(function (responses) {
    // Get a JSON object from each of the responses
      return responses.map(function (response) {            
        console.log(response.url);
        return response.json();
      });
});

answered Nov 5, 2020 at 11:46

eol

24.7k6 gold badges53 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

eol Over a year ago

What do you mean? responses is an array that contains the resolved responses, you then map this array to get the json response payload for each element.

Collectives™ on Stack Overflow

Call multiple API in for loop and get one by one response using node js

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related