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0

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Merge values to an array based on similar object key javascript

i have a return like this

[
{
    "tripw3": "1"
},
{
    "tripw1": "2"
},
{
    "tripw1": "3"
},
{
    "tripw2": "4"
},
{
    "tripw2": "5"
},
{
    "tripw3": "6"
},
{
    "tripw3": "7"
}]

and I want to make the above result be

[
{
 tripw3: ["1", "6", "7"],
 tripw2: ["4", "5"],
 tripw1: ["3", "2"]
}]

Until now I'm still confused to make this happen.

about 4 years ago · Santiago Gelvez
1 answers
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0

You cane easily acheve the result using reduce, Object.keys and forEach

const arr = [
  {
    tripw4: "1",
  },
  {
    tripw4: "2",
  },
  {
    tripw4: "3",
  },
  {
    tripw4: "4",
  },
  {
    tripw4: "5",
  },
  {
    tripw4: "6",
  },
  {
    tripw4: "7",
  },
];

const result = [arr.reduce((acc, curr) => {
  Object.keys(curr).forEach((k) => acc[k] ? acc[k].push(curr[k]) : (acc[k] = [curr[k]]));
  return acc;
}, {})];

console.log(result);
/* This is not a part of answer. It is just to give the output full height. So IGNORE IT */
.as-console-wrapper { max-height: 100% !important; top: 0; }

about 4 years ago · Santiago Gelvez Report
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