mongoose,how to query array[object] structure?

If I have the array[object] schema:

For example:

var operation = new Schema({
    name:{type:String},
    number:[Number],
});

var Info = new Schema({
    operation:[operation],
}); 

1.when operation.name='jack'; or 2.when operation[i]=100; How to query the condition by Info Schema.

 Info.findOne({
    condition
 },function(e,r){

 })

:

via Albert Chen