mongo select by element in array code example
Example 1: mongodb find element in array
db.yourCollection.find( { array: "element" } )
Example 2: mongodb array field contains
db.inventory.find( { tags: { $all: ["red", "blank"] } } )
db.yourCollection.find( { array: "element" } )
db.inventory.find( { tags: { $all: ["red", "blank"] } } )