MongoDB supports a wide range of data types as values in documents. Documents in MongoDB are similar to objects in JavaScript. Along with JSON’s essential key/value–pair nature, MongoDB adds support for a number of additional data types. The common data types in MongoDB are :
Null {"x" : null}
Boolean {"x" : true}
Number {"x" : 4}
String {"x" : "foobar"}
Date {"x" : new Date()}
Regular expression {"x" : /foobar/i}
Array {"x" : ["a", "b", "c"]}
Embedded document {"x" : {"foo" : "bar"}}
Object ID {"x" : ObjectId()}
Binary Data : Binary data is a string of arbitrary bytes.
Code {"x" : function() { /* ... */ }}
