React Native and Firebase send data to database - database

Question

I am very new to Firebase and I have been looking up how to simply send data to Firebase from React Native. So far I have figured out that you have to import
import * as firebase from 'firebase';
and have
const firebaseConfig = {
apiKey: "AAAAAAAAAAAA3HbIO0u6yxU5MsE6FM",
authDomain: "kokeilut.firebaseapp.com",
databaseURL: "https://kokeilut.firebaseio.com",
storageBucket: "kokeilut.appspot.com",
};
const firebaseApp = firebase.initializeApp(firebaseConfig);
but the problem is that I don't know how to send data to database.
Please help me with this, my main point is to send Name and highscore of my application.

Answer 1

I Strongly recommend you to read Firebase JavaScript Documentation, which is much clear than my example. Please correct me if I am wrong.
The following is my example code.
This way will allow Firebase create a Unique Id for your object.
firebase.database().ref(url).push(jsonObject).
then((data) => {
dispatch({type:"FULFILLED"})
//success
}).
catch((err) => {
dispatch({type:"REJECTED"})
//error
});
This way will make you create a customerId for your object.
firebase.database().ref(url+customerId).set(jsonObject).
then((data) => {
dispatch({type:"FULFILLED"})
//success
}).
catch((err) => {
dispatch({type:"REJECTED"})
//error
});

Answer 2

First, install firebase: npm install firebase
Then import firebase to your project: import * as firebase from 'firebase';
Then you can write to a database, but make sure that you have created a database in firebase, and you gave permission to write and read.
firebase.database().ref('users/').set({
username: "name",
email: "email",
profile_picture: "imageUrl"
});