How to get javascript object's value with key

Question

I have a object like this code

var coinNameKR = {
  BTC: 'bitcoin',
  ETH: 'ethereum',
  DASH: 'dash',
}

And I want to get each value's with the key. So I search on stackoverflow and find this code

function getValueByKey(object, row) {
  return Object.values(object).find(x => object[x] === row.key);
}

console.log(getValueByKey(coinNameKR, row.key));

But It seems it only returns bitcoin only.

For example if

console.log(getValueByKey(coinNameKR, 'ETH'));

it should be ethereum, but still bitcoin. And I found get Key By Value but I can't not find get value by key.

Jack Bashford · Accepted Answer · 2019-07-02 02:26:37Z

4

You just need to return the value of the key in the object:

var coinNameKR = {
  BTC: 'bitcoin',
  ETH: 'ethereum',
  DASH: 'dash',
}

function getValueByKey(object, row) {
  return object[row];
}

console.log(getValueByKey(coinNameKR, "ETH"));

answered Jul 2, 2019 at 2:26

Jack Bashford

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3 Comments

writingdeveloper Over a year ago

Thanks for answer. Solutions are really easy.. I think I should study more about javascript basic..

Jack Bashford Over a year ago

No worries @sangumee, always glad to help.

Adrian Brand Over a year ago

If all you are looking for is the value of a key why would you not just use coinNameKR.ETH or coinNameKR['ETH']?

Nam V. Do · Accepted Answer · 2019-07-02 02:29:39Z

1

Is that is what you are looking for?

var coinNameKR = {
  BTC: 'bitcoin',
  ETH: 'ethereum',
  DASH: 'dash',
}
for(let i in coinNameKR){
  console.log(`${i} has the value: ${coinNameKR[i]}`)
}

answered Jul 2, 2019 at 2:29

Nam V. Do

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Comments

Adrian Brand · Accepted Answer · 2019-07-02 02:39:18Z

1

var coinNameKR = {
  BTC: 'bitcoin',
  ETH: 'ethereum',
  DASH: 'dash',
}

const dumpProps = obj => Object.keys(obj).forEach(key => { console.log(`${key}'s value is ${obj[key]}`) });

dumpProps(coinNameKR);

answered Jul 2, 2019 at 2:39

Adrian Brand

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