TYPESCRIPT

mongodb replace item in array

db.movies.updateMany(
    { "languages": "French" }, 
    { "$set": { "languages.$": "Francais" } }
)

mongodb update all items in array

// If array field not in find, use $[]
db.products.updateMany({}, {
  $set:{ "variants.$[]._id": new ObjectId() }
})

mongodb find and update array item by id

db.myCollection.update({"_id" : 1, "lb.id" : 2},{$set : {"lb.$.sc" : 17}})