我的代碼保存了該值，更多的是當(dāng)頁(yè)面刷新并點(diǎn)擊按鈕時(shí)該值返回到 1var button = document.getElementById("button-download"),    count = 0;button.onclick = function() {    count += 1;    firebase.database().ref('counter').set(count);    updateValue();};function updateValue() {    firebase.database().ref('counter').once('value', function(snapshot) {        var badge = document.getElementById("badge-value");        badge.innerHTML = "Download: " + snapshot.val();    });}我怎么解決這個(gè)問(wèn)題？