Monogodb----Date ()

Returns the date as a string or Date object.

• Date () returns the current date as a string in the MONGO shell.
• new Date () returns the current date as a Date object. The MONGO shell wraps the date object as a isodate helper. Isodate in UTC.

You can specify a specific date by passing the date () method to the date () method. For example:

new Date ("<YYYY-mm-dd>") it returns ISODate的 the date of the specified date.

New Date ("<YYYY-mm-ddTHH:MM:ss>") It specifies datetime in the local datetime and returns the date of the specified datetime in UTC.

The new date ("<YYYY-mm-ddTHH:MM:ssZ>") specifies datetime in UTC and returns the isodate of the specified datetime in UTC.

If a document with ID equal to 1 does not exist in the product collection, the following action adds the current date insert to the field dateadded:

DB.  Products.  Update_id$setitem$setOnInsertdateaddedDateupsert})  

Monogodb----Date ()