how to check key value pair in javascript array of object

Question

let devicesInfo = [
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' }
  ]

let deviceId= "96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013"

I want check deviceId in deviceinfo array and get its value in result.

[Object.entries](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) is probably what you ask for. But to be honest, I don't understand what your desired outcome ("check") would be. — A_A, Oct 04 '20 at 13:51
Does this answer your question? [Array of objects check if it includes key value pair; on which position - Javascript](https://stackoverflow.com/questions/53971269/array-of-objects-check-if-it-includes-key-value-pair-on-which-position-javasc) — adzo261, Oct 04 '20 at 13:51
In your example, you have duplicate objects with the same key and value. If the key repeats will the value always be the same? If not, should it get the value of the first object or last object? Can you also please share your attempt? — Nick Parsons, Oct 04 '20 at 13:54

ElectricShadow · Answer 1 · 2020-10-04T14:06:18.047

let devicesInfo = [
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' }
];

let deviceId= "96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013";

let deviceValue = 'Device not found';

devicesInfo.forEach(device => {
  deviceValue = device[deviceId] ?? deviceValue;
});

console.log(deviceValue);

score 0 · Answer 2 · answered Oct 04 '20 at 16:49

let devicesInfo = [
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' },
  { '96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013': '::1' }
  ]

let deviceId= "96abc32b47fc10c88704b9a799c65b5c05455f4a9ef92013"

const getDevice = (id) => {
  devicesInfo.filter((val) => val.hasOwnProperty(id));
  return devicesInfo[0] ? devicesInfo[0][id] : undefined;
};

console.log(getDevice(deviceId)); // '::1'

console.log(getDevice('fhqwhgads')); // undefined

how to check key value pair in javascript array of object

2 Answers2