MongoDB entry-4 data types-date and array

Date

When creating a date in MongoDB, the date created in different ways is different.

The date type created using date () in MongoDB is a string type, which contains time zone and other data. New Date () is a date object of the isodate type. Similarly, we can use the isodate () method to create a date object. The result is the same as that of new date. The following is what I tested on my computer:

Here, we need to emphasize thatProgramMake sure to use the correct type to prevent type Matching errors during future search. For example, if we use date () when creating a document, it returns a string, we can't find it if we compare it with objects.

Array

The array in MongoDB is flexible, and the elements in the array can be different.