var database = firebase.database(); //db is empty.function handler(e, prevChildKey) { console.log(e.val());}database.ref('user').orderByChild('color').startAt('a').on('value', handler);database.ref('user').set({ 'ryan': {color: "a"}, 'john': {color: "b"}, 'kirsty': {color: "c"},});我希望：{ryan: {color: "a"}}被記錄到控制臺。原因是因為我認為startAt匹配值以開頭的鍵"a"。相反，它記錄：{ john: {color: "b"}, kirsty: {color: "c"}, ryan: {color: "a"}}
Firebase 的實時數據庫的“startAt”未按預期工作
慕尼黑8549860
2023-05-11 10:25:37
