orderbychild firebase code example
Example 1: firebase orderbychild update
database.ref('/app/posts')
.orderByChild('material')
.equalTo(materialName)
.once('value', function (snapshot) {
snapshot.forEach(function(child) {
child.ref.update({material: false});
});
});
Example 2: orderbychild firebase react
firebase.database().ref('items/').orderByChild('letter').on('value', snapshot => {
snapshot.forEach(c => { i = c.val(); console.log(i.number, i.letter, i.date) })
})