mongodb starts with code example

Example 1: mongodb regex

{ <field>: { $regex: /pattern/, $options: '<options>' } }
{ <field>: { $regex: 'pattern', $options: '<options>' } }
{ <field>: { $regex: /pattern/<options> } }

Example 2: mongodb find starts with

db.users.find({"name": /.*m.*/})

Or, similar:

db.users.find({"name": /m/})