how to find specific field in mongodb code example

Example 1: mongodb select fields

db.inventory.find( { status: "A" }, { item: 1, status: 1 } )

Example 2: find only one field mongodb

db.students.find({}, {roll:1, _id:0})

Example 3: how to project specific field mongodb nodejs

db.inventory.find( { status: "A" }, { item: 1, status: 1 } )
//1 to show and 0 to hide
//_id always included need to be set to 0 if not needed