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firebase database check if value exists

Hemang Joshi answered on April 8, 2021 Popularity 7/10 Helpfulness 8/10

answer firebase database check if value exists

firebase database check if value exists

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var ref = firebase.database().ref("users/ada");
ref.once("value")
  .then(function(snapshot) {
    var a = snapshot.exists();  // true
    var b = snapshot.child("name").exists(); // true
    var c = snapshot.child("name/first").exists(); // true
    var d = snapshot.child("name/middle").exists(); // false
  });

Popularity 7/10 Helpfulness 8/10 Language javascript

Source: firebase.google.com

Tags: database exists firebase javascript

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