Shulou(Shulou.com)06/01 Report--

1. List command to display all data

Show dbs

two。 Show the current database object or collection command

Db

3. Connect to a specified database command

Use local

4. Get the creation time command for the document

Var newOjbect = ObjectId ()

Var newOjbect.getTimestamp ()

5. Get current time command

Var mydate = new Date ()

Mydate

/ / or

Var mydate2 = ISODate ()

Mydate2

/ / or

Date ()

6. Determine data type command

Typeof mydate2

7. A string converted to a time type

Var mydatestr = mydate.toString ()

Mydatestr

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