Array : mongodb schema how to set default value for array of sub documents?

Array : mongodb schema how to set default value for array of sub documents?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As I promised, I have a secret feature to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

A short overview of who I am,
Hi, my name is Delphi, nice to meet you.
I am here to help you get the answers you are seeking.
Array : mongodb schema how to set default value for array of sub documents?
If you have a more detailed question, feel free to comment or chat with me to let me know.
Don't hesitate to provide your answer or insights by leaving a comment below.
A 'heart' from me will indicate my appreciation for your answer.
of Array default mongodb sub schema how to value array for documents? set :