mongodb operators

$in
The $in operator selects the documents where the value of a field equals any value in the specified array.

jobIds [
  { _id: 61d3e5dc0b2613ae328cc0c5 },
  { _id: 61d3e66e0b2613ae328cc0c6 },
  { _id: 61d3e74a0b2613ae328cc0c7 },
  { _id: 61d556dc0b2613ae328cc169 },
  { _id: 61d57dc20b2613ae328cc16a },
  { _id: 61d580900b2613ae328cc16c },
  { _id: 61d59a9d0b2613ae328cc16d },
  { _id: 61d84bd90b2613ae328cc18f },
  { _id: 61d84c700b2613ae328cc190 },
  { _id: 61d92c710b2613ae328cc1ac },
  { _id: 61d92ecd0b2613ae328cc1ad },
  { _id: 61d947510b2613ae328cc1ae },
  { _id: 61d996ef0595f55e1f4e0a40 }
]
const mongoIds = jobIds.map(id => id._id)
     console.log("mongoIds", mongoIds)
     const result = await Slot.find({jobId: { $in:mongoIds }})
     console.log("result", result)

$exists
we can check the existence of the field in the specified collection using the $exists operator & setting it true

const queryObject = {
        jobId: { $in:objectIds },
        candidateId: {$exists: true},
        excluded: false
      };