display specific value in JSON object by ARRAY value

Question

I have a JSON array and another array as follows.

JSON OBJECT

    {
      id: 1,
      name: 'abc',
      email: '[email protected]',
    },
    {
      id: 2,
      name: 'def',
      email: '[email protected]',
    },

SELECTED ARRAY

['id', 'email']

QUESTION

the selected array can have any key value of JSON Object what I want is JSON array should show the specific keys that are selected by a selected array

WHAT I TRIED

  let jsonData = {};
  let arr = [];

  this.selectedExcelTitle.forEach((element) => {
    var columnName = element;
    jsonData[columnName] = this.Users.forEach((e) => {
      return e.element;
    });
  });
  arr.push(jsonData);

Do you want to filter the "JSON OBJECT" bases on "SELECTED ARRAY"? — Anand G
– Anand G, Commented May 20, 2021 at 15:09

shaedrich · Accepted Answer · 2021-05-20 15:12:21Z

5

This snippet filters each entry of the given jsonObject (array of objects) so that the resulting filteredJsonObject(array) only contains key-value pairs with a key that is contained in your selectedArray.

var filteredJsonObject = jsonObject.map(function(entry) {
    return selectedArray.reduce(function(res, key) {
        res[key] = entry[key];
        return res;
    }, {});
});

answered May 20, 2021 at 15:12

shaedrich

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