MongoDB小结06

数组修改器，既然名字都这样叫了，那么这个修改器就只能对数组进行操作啦。

db.user.update({"name":"qianjiahao"},{"$push":{"hobby":"sleeping"}})
{ "_id" : ObjectId("55082691591555a6c35dd698"), "name" : "codingwhy.com", "email" : "example@example.com", "hobby" : [ "swimming", "running", "reading", "sleeping" ] }