Append objects in loop

Question

I've chunks of data coming as response of each call and is retrieved as parameter of a function in below format. I need to append all the chunks of data into one.

function getJSONdata(jsondata){
//Below is where I need help
//cumilatedJSONdata = cumilatedJSONdata + jsondata
}

Below is the Format of the objects coming:

var jsondata = {"results":[
{"code":"1101696","name":"1101696","price":{"formattedValue":"36.00 
CAD"}},
{"code":"1101693","name":"1101693","price":{"formattedValue":"33.00 
CAD"}},
{"code":"1101699","name":"1101699","price":{"formattedValue":"39.00 
CAD"}}
]};

I want the cumilatedJSONdata structure should be something like

var cumilatedJSONdata = {"results":[
{"code":"1101696","name":"1101696","price":{"formattedValue":"36.00 
CAD"}},
{"code":"1101693","name":"1101693","price":{"formattedValue":"33.00 
CAD"}},
{"code":"1101699","name":"1101699","price":{"formattedValue":"39.00 
CAD"}},
{"code":"1101693","name":"1101693","price":{"formattedValue":"33.00 
CAD"}},
{"code":"1101699","name":"1101699","price":{"formattedValue":"39.00 
CAD"}},
{"code":"1101693","name":"1101693","price":{"formattedValue":"33.00 
CAD"}},
{"code":"1101699","name":"1101699","price":{"formattedValue":"39.00 
CAD"}}
]};

I tried something like this

var cumilatedJSONdata= {"results":[]}

function getJSONdata(jsondata){
var cumilatedJSONdata = $.extend(true,cumilatedJSONdata, jsondata
}
 );

This is not persisting previous data and getting replaced with new data.

Could anyone please help me on this.

`var cumulatedData = ''; function getJSONdata(jsondata){ cumulatedData += jsondata; }` — GrafiCode, Jun 04 '19 at 11:04
You are dealing with regular JavaScript objects, not JSON. The JSON format is for *serialised* data and it's text. Since you have actual objects and arrays, you can simply combine the arrays. — VLAZ, Jun 04 '19 at 11:04
Possible duplicate of https://stackoverflow.com/questions/5080028/what-is-the-most-efficient-way-to-concatenate-n-arrays — www.admiraalit.nl, Jun 04 '19 at 11:06
Possible duplicate of https://stackoverflow.com/questions/1374126/how-to-extend-an-existing-javascript-array-with-another-array-without-creating — www.admiraalit.nl, Jun 04 '19 at 11:08
I'm not exactly able to correlate those solutions here @www.admiraalit.nl — LNP, Jun 04 '19 at 12:03

score 1 · Answer 1 · answered Jun 04 '19 at 11:04

1

let results = [];

// do your async loop / promise loop here
while (needToGetResults) {
    let newResponse = await asyncRequest();
    results = results.concat(newResponse.results);
}

return results;

alternatively,

return {results:results}

answered Jun 04 '19 at 11:04

TKoL

13,158
3
39
73

score 1 · Accepted Answer · answered Jun 04 '19 at 11:05

1

You can try using the concat method of javascript

cumilatedJSONdata.results = cumilatedJSONdata.results.concat(jsondata.results);

answered Jun 04 '19 at 11:05

Naga Raj

68
7

This is giving as cumilatedJSONdata is not defined ReferenceError: cumilatedJSONdata is not defined – LNP Jun 04 '19 at 11:16
Try running this: var cumilatedJSONdata = {"results":[]}; var jsondata = {"results":[ {"code":"1101696","name":"1101696","price":{"formattedValue":"36.00 CAD"}}, {"code":"1101693","name":"1101693","price":{"formattedValue":"33.00 CAD"}}, {"code":"1101699","name":"1101699","price":{"formattedValue":"39.00 CAD"}} ]}; cumilatedJSONdata.results = cumilatedJSONdata.results.concat(jsondata.results); – Naga Raj Jun 04 '19 at 11:22
Are you getting the jsondata from a request? – Naga Raj Jun 04 '19 at 11:39
Thank you there was an issue with the scope and now its resolved – LNP Jun 04 '19 at 12:19

Append objects in loop

2 Answers2