How to update multiple documents in mongodb using one query from an array of objects

Try this for updating bulk data

 const data = [
        {
            _id: 'dfjkldsjfkldjas',
            name: 'will'
        },
        {
            _id: 'fdsfdakjdhfaskh',
            name: 'bob'
        },
        {
            _id: 'fdsfdasfdfewrfq',
            name: 'tom'
        }
    ]
    const bulkData = data.map(item => (
        {
            updateOne: {
                filter: { _id: item._id },
                update: { $set: { name: item.name } },
                upsert: true 
            }
        })
    );
await db1.bulkWrite(bulkData, { ordered: false, upsert: true });

You can use a bulkWrite to achieve this. First map your array and transform the data like so:

const data = [
    {
        _id: 'dfjkldsjfkldjas',
        name: 'will'
    },
    {
        _id: 'fdsfdakjdhfaskh',
        name: 'bob'
    },
    {
        _id: 'fdsfdasfdfewrfq',
        name: 'tom'
    }
]

const bulkData = data.map(item => (
  {
     updateOne: {
        filter: { _id: item._id },
        update: { $set: { name: item.name }}
     }
  })
);

Then you use the method bulkWrite to save the multiple data.

db.yourCollection.bulkWrite(bulkData);

You also don't have to use the same DB operation for every entry, you can use different ones on the same bulk like deleteOne, replaceOne, insertOne, etc.

You can check more here: https://docs.mongodb.com/manual/reference/method/db.collection.bulkWrite/