![]() ![]() To get actual document data, call the data() method on the docSnap object. The getDoc() method will return a promise, add await keyword in front of it.Īssign it to a constant called docSnap (short form for document snapshot). Invoke the getDoc() method passing docRef as an argument to it. const docRef = doc(db, "cities", "2l3bcSGs2vZBIc3RODwp") ID of a document → 2l3bcSGs2vZBIc3RODwp in this case (see the screenshot above)Ĭall the doc() method, pass three arguments and assign it to a constant called docRef (short form for document reference).Collection name → cities in this case (see the screenshot above).The three arguments of the doc() method are: The getDoc() method takes a single argument which is the doc() method. ![]() Initialize Firestore Database const db = getFirestore() The import statement uses the CDN version of the Firebase SDK in this example. In particular, if all of the keys are integers, and more than half of the keys between 0 and the maximum key in the object have non-empty values, then Firebase. val() or use the REST api to read data, if the data looks like an array, Firebase will render it as an array.
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