How to get data from mongoose find query inside for loop

[yogeshkr]

i cant figure out how to get when i have to find the all records in the mongo db document and check a field which is true or false from each document inside collection

here i am first finding all user from user table after that taking the user ids and finding teir course registrations if the course registration is true then i have to increase cnt by one my question is how can i get the final cnt value outside of for loop

       countuser(){
       let cnt=0;
       for(let i=0;i<users.length;i++)
        {
           this.course_reg.find({_id:userId[i]},function(error,coursereg){
               
                      if(coursereg.isCompleted==true)
                       {
                                 // it will count the user who have isCompleted is true
                                    cnt++;
                        }
           })
}

[zmbd]

the variable cnt should have your loop count, no?
However, you don't mention what you want to do with the value; thus, something simple like console.log(cnt ) should send the value to the console