What is Mongoose.prototype.Date in Mongoose?
Mongoose.prototype.Date, or simply Mongoose Date, is a Date SchemaType.
A SchemaType is the configuration for any property of a model. See the example below:
const personSchema = new Schema({
name: String,
age: Number,
dateOfBirth: Date
})
In the example above, String, Number, and Date are all SchemaTypes. This means that they configure the fields of any document stored in our database.
The Date SchemaType configures MongoDB to store the date as a Date object in our database. An example is shown below:
ISODate("1990-01-01T23:00:00Z")
The example above shows how Date is stored in a MongoDB database.
The ISO format is the International Organization for Standardization (ISO) date format and is a standard way to express a numeric calendar date in a simple way.
Code
In the following example, we are going to create a schema with the Date SchemaType and test to see if it is actually a Date SchemaType with the schema.path() method.
// import mongooseconst mongoose = require("mongoose")// create a schema constructor objectconst Schema = mongoose.Schema// create a person schema and// configure paths with SchemaType// such as Dateconst personSchema = new Schema({name: String,age: Number,dateOfBirth: Date,})// test path to see if it is// actually a `Date` SchemaTypeschema.path("dateOfBirth") instanceof Date // Returns true
In the example above, true is returned because dateOfBirth is a truly configured path for Date SchemaType.
