mongodb js adding element to list code example
Example 1: mongodb add multiple element to array
db.students.update(
{ name: "joe" },
{ $push: { scores: { $each: [ 90, 92, 85 ] } } }
)
Example 2: mongodb add to array if not exists
db.tags.update(
{name: 'sport'},
{$addToSet: { videoIDs: "34f54e34c" } }
);