How can I get array from child in the JavaScript firebase sdk from database

Question

I want to display all the values in the vertex. How can I do this? Currently the following code give me null value.

var dbRef = firebase.database().ref("data/aqibkhan109").child('corn').child('polygon19').child('vertex');

        dbRef.on('value', function(snapshot){
          console.log(snapshot.val());
        });

Any help Please, It's a realtime database

Doug Stevenson · Accepted Answer · 2019-10-30 06:32:59Z

1

The first node of your database is "Data" with a capital D, but your code is using "data" with a lowercase d. The database is always case sensitive, and queries need to match exactly.

answered Oct 30, 2019 at 6:32

Doug Stevenson

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1 Comment

Tufail Ahmad Over a year ago

Thank you so much sir, it worked. I was using small data. :)

Peter Haddad · Accepted Answer · 2019-10-30 06:34:14Z

1

Change this:

ref("data/aqibkhan109")

into this:

ref("Data/aqibkhan109")

data should use capital letter same as in the database.

answered Oct 30, 2019 at 6:34

Peter Haddad

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Tufail Ahmad Over a year ago

Thank you so much sir, it worked. I was using small data. :)

prosoitos · Accepted Answer · 2019-10-30 07:46:46Z

0

var dbRef = firebase.database().ref().child("Data/aqibkhan109/corn/polygon19/vertex");
dbRef.on('value',snapshot=>{
console.log(snapshot.val());
});

Try this. I hope it will work for you.

edited Oct 30, 2019 at 7:46

prosoitos

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answered Oct 30, 2019 at 6:47

Mohd Talha

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