javascript - MongoDB: query Array for 'true' value at index n -

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so have collection containing field "weekdays" representing weekdays monday-sunday (checked or not checked):

  var collection = [      // work week (monday friday)     {       weekdays: [true, true, true, true, true, false, false]     },      // weekend     {       weekdays: [false, false, false, false, false, true, true]     },      // ...    ];

now, how can query collection find items has true specified weekday?

my first attempt use this:

// $elemmatch...

'weekdays[0]': true // monday

but did not seem work. i'm out of ideas atm , appreciate help!

you can use code

db.collectin.find({'weekdays.0' : true})

and if want check 2 days:

db.collectin.find({$and :      [         {'weekdays.0' : true},         {'weekdays.1' : true}     ] })

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