How to request an element from a firebase collection?

Question

React

There is a collection in firebase:

How to query one element by id?

Answer 1

https://firebase.google.com/docs/database/web/read...
is the documentation. Here you can find answers to 60% of questions.

firebase.database().ref('/catalog/' + Need ID ).once('value').then(function(snapshot) {
  var data = snapshot.val()
console.log("data",data)
  // ...
});