Question 215380 in Javascript Question posted in
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Javascript – Join all keys from object that contain same number and returns array of objects

I’m attempting to join all keys/values that have the same number. So for example, if the key name is alfa0: 'theValueOfAlfa' and there is another key with the same number (in this case 0) beta0: 'theValueOfBeta', I would like to join them and return a object:

{
  name: 'theValueOfAlfa',
  value: 'theValueOfBeta'
}

This object:

const vls = {"lote0": "jg", "lote1": "h", "lote2": "fm", "loteQnt0": "jgvalue", "loteQnt1": "hvalue", "loteQnt2": "fmvalue" }

the expected output:

const result = [
 {
   name: 'jg',
   value: 'jgvalue'
 },
 ...
]
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I create this snippet which can deal with the case. I don't believe this is the best approach, but it is a solution

    const v = {"lote0": "jg", "lote1": "h", "lote2": "fm", "loteQnt0": "jgvalue", "loteQnt1": "hvalue", "loteQnt2": "fmvalue" }

const lote = Object.keys(v).filter((k, v) => {
    return k.match(/loted+$/);
}).reduce((obj, key) => {
        obj[key] = v[key];
        return obj;
  }, {});

const loteQnt = Object.keys(v).filter((k, v) => {
    return k.indexOf('loteQnt') == 0;
}).reduce((obj, key) => {
        obj[key] = v[key];
        return obj;
  }, {});

const arr = []

Object.entries(lote).forEach((k, i) => {
    console.log(k[1])
    const obj = {}
    obj['lote'] = k[1]
    obj['loteQnt'] = Object.values(loteQnt)[i]    
    arr.push(obj)

})

result:
[LOG]: [{
  "lote": "jg",
  "loteQnt": "jgvalue"
}, {
  "lote": "h",
  "loteQnt": "hvalue"
}, {
  "lote": "fm",
  "loteQnt": "fmvalue"
}]

  2. 0

    You can simply achieve this by iterating over an object to get the keys in an array and then fetch the numbers using RegEx and then perform the assignment into a new object.

    Live Demo :

    function groupValuesByNumber(obj) {
  const groupedValues = {};

  Object.keys(obj).forEach(key => {
    const match = key.match(/d+$/);
    if (match) {
      const number = match[0];
      !groupedValues[number] ?
        groupedValues[number] = { name: obj[key] } : groupedValues[number].value = obj[key]
    }
  })

  // Convert the groupedValues object to an array of objects
  const result = Object.values(groupedValues);

  return result;
}

const obj = {
  "lote0": "jg",
  "lote1": "h",
  "lote2": "fm",
  "loteQnt0": "jgvalue",
  "loteQnt1": "hvalue",
  "loteQnt2": "fmvalue"
};

const result = groupValuesByNumber(obj);

console.log(result);
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