Iterate and sum two different array of objects and return new array- JS

Question

Is that possible to sum two different objects from array object and to return single array of object?

let source= [{
  "supplimentKing": [{
    "pwdrName": "zzzzz",
    "pwdrPrice": "2"
  }],
  "protinsAddonOffer": [{
    "pwdrName": "oooo",
    "pwdrPrice": "3"
  }]
}];

result:

[{
  "pwdrName": "zzzzz + oooo",
  "pwdrPrice": "5"
}]

After trying to understand similar SO 1 , SO 2, SO 3 i could not understand how to get expected result.

could some one pls help me how to sum the properties in clean way?

Thanks

You want to merge all the objects in the array to a single value/object ? — Nithish, Jul 02 '20 at 11:56
This just needs a `for` loop and `parseInt()` - So what have you tried so far to solve this on your own? — Andreas, Jul 02 '20 at 11:56
@Andreas , first i tried to filter price n name then reduce it by summing them both — Mr. Learner, Jul 02 '20 at 11:59
because there lot of properties inside the response but i want to do summation on selected offer combination — Mr. Learner, Jul 02 '20 at 12:02
@Andreas i dont want to complicate by using nested or two independent for loops since it has two different object from same array. — Mr. Learner, Jul 02 '20 at 12:09
why does expected output have key supplimentking if it pulls data from other places too. do any/all of those arrays of objects contain additional elements. — James, Jul 02 '20 at 12:17
@James ""supplimentking is just for understanding. and Yest has many. i just give necessary properties for summation i edited my thread. Thanks — Mr. Learner, Jul 02 '20 at 12:19
why is each object in the source array, an array of object (one...)? And prices as Numbers - this makes more sense: `source= [ { "pwdrName": "zzzzz", "pwdrPrice": 2 }, { "pwdrName": "oooo", "pwdrPrice": 3 } ];` — iAmOren, Jul 02 '20 at 13:03

Sven.hig · Accepted Answer · 2020-07-02T15:34:37.033

You could use reduce to add values

let source= [{
  "supplimentKing": [{
    "pwdrName": "zzzzz",
    "pwdrPrice": "2"
  }],
  "protinsAddonOffer": [{
    "pwdrName": "oooo",
    "pwdrPrice": "3"
  }],
  "proAddonOffer": [{
    "pwdrName": "iiiii",
    "pwdrPrice": "3"
  }]
}];

p=[]
  source.forEach((o)=>{
    p.push(...Object.values(o))
  })
  v=p.flat()
total= v.reduce((acc,curr)=>{
  acc= [{"pwdrName":curr.pwdrName+"+"+acc.pwdrName,"pwdrPrice":Number(curr.pwdrPrice)+Number(acc.pwdrPrice)}]
  return acc[0]

})
console.log([total])

Iterate and sum two different array of objects and return new array- JS

1 Answers1