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i am trying to return true if object exists with

var primary={
  "RHID": {
    "type": "numeric"
  },
  "CD_DOC_ID": {
    "type": "numeric"
  },
  "SEQ": {
    "type": "numeric"
  }
}

console.log(_.contains(primary, 'RHID'))

But aways get false. Thanks

i am trying to return true if object exists with

var primary={
  "RHID": {
    "type": "numeric"
  },
  "CD_DOC_ID": {
    "type": "numeric"
  },
  "SEQ": {
    "type": "numeric"
  }
}

console.log(_.contains(primary, 'RHID'))

But aways get false. Thanks

• javascript
• object
• lodash

Share Improve this question Follow edited Jan 27, 2016 at 13:04 suvroc 3,06211 gold badge1717 silver badges2929 bronze badges asked Jan 27, 2016 at 12:27 Leonel Matias DomingosLeonel Matias Domingos 2,08066 gold badges3636 silver badges5454 bronze badges

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3 Answers 3

Sorted by: Reset to default 3

You can use _.has method

console.log(_.has(primary, 'RHID'))

RHID is a key inside the object primary, so you should look up in the keys of primary.

loDash function _.keys returns an array of all the object keys, yo ucan use it this way:

console.log(_.contains(_.keys(primary), 'RHID')) // true

A lodash solution using has() or hasIn():

var primary=
{
    "RHID": {
      "type": "numeric"
    },
    "CD_DOC_ID": {
      "type": "numeric"
    },
    "SEQ": {
      "type": "numeric"
    }
}
console.log(_.has(primary, 'RHID'));

_.has() checks for own properties, _.hasIn() verifies for own and inherited ones.

But it would be better to use in operator:

var primary=
{
    "RHID": {
      "type": "numeric"
    },
    "CD_DOC_ID": {
      "type": "numeric"
    },
    "SEQ": {
      "type": "numeric"
    }
}

console.log('RHID' in primary);

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