sorting - firebase sort reverse order -

var playersref = firebase.database().ref("team_mapping/");   playersref.orderbychild("score").limittofirst(7).on("child_added", function(data) { } 

using query, can sort in ascending order. but, wanted sort in descending order. can body suggest me way this. appreciated.

thanks in advance!!

you can limit last 7 give highest scores since query in ascending order. have reverse last 7 them in descending order.

var playersref = firebase.database().ref("team_mapping/"); var playersdata = []; var pagecursor;  playersref.orderbychild("score").limittolast(7).on("child_added", function(data) {     playersdata = [data] + playersdata; } 

update

here example of how paginate score.

const query = firebase.database().ref("team_mappings").orderbychild('score');  var snapshots = [];  function reversedchildren(snapshot) {     var children = [];     snapshot.foreach(function (child) { children.unshift(child); });     return children; }  function addplayertoleaderboard(snapshot) {     var key = snapshot.key;     var place = snapshots.indexof(snapshot) + 1;     var score = snapshot.child('score').val();     $('#leaderboard').append(`<li><b>${key}: ${score}</li>`); }  function parsepage(snapshot) {     var children = reversedchildren(snapshot);     children.foreach(function (child) {         players.push(child);         addplayertoleaderboard(child);     });     pagecursor = children[children.length - 1]; }  function reloadplayers() {     players = [];     pagecursor = null;     query.limittolast(5).once('value').then(parsepage); }  function loadmoreplayers() {     query.endat(pagecursor).limittolast(5).once('value').then(parsepage); }  reloadplayers();  $('#reload').on('click', reloadplayers); $('#load_more').on('click', loadmoreplayers);