title: Get child count in firebase web
body: <p>is there a way to get the number of children in a firebase node, because I want to perform a loop function. I want to know how many children are there under pictures.</p>
  
  <pre><code>   usernames = database.child("Item_features").get()
     for user in usernames.each():
     userid = user.key()
     dtls = database.child("Item_features").child(userid).child('model').get().val()
     if dtls == imodel:
  
     data = {"picture": picture}
  
   database.child("Item_features").child(userid).child("picture").push(data)
  </code></pre>