It is very simple to insert a document into a collection without using the insert method.
Take a variable by using the command var data = { } ** and assign multiples of (key:value) pairs to store data within it in such a way.
**data.name = "alok"
data.age = 27
data.email_id = "xyz@gmail.com"
Use the method "save" to insert or update the existing document in a collection. Here I assumed database name is "db", collection name is "employee".
Now issue following command
db.employee.save(data)
The command used above is used in place of insert method.