NodeJS : How to use $match in aggregate in mongodb for optional parameter

NodeJS : How to use $match in aggregate in mongodb for optional parameter
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

Let me give you a quick introduction about myself,
Hello everyone, I'm Delphi.
Let me help you with your questions.
NodeJS : How to use $match in aggregate in mongodb for optional parameter
Don't hesitate to leave a comment or start a chat if you have a more specific question.
Please feel free to leave a comment below if you have an answer or insights on the answer.
A 'heart' from me is a way of showing appreciation for your answer.
to parameter optional for : in mongodb aggregate $match How use NodeJS in