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firebase:不从实时数据库获取数据

[英]firebase: don't get data from realtime database

I don't get data from realtime database, but load is perfect.我没有从实时数据库中获取数据,但负载很完美。 how fix it?如何修复它?

const dbRef = database.ref();
    var data;
    dbRef.child("playlists").child(1).get().then((snapshot) => {

        data = snapshot.val();

    }).catch((error) => {
        console.error(error);
    });

data is underfined数据不足在此处输入图像描述

There isn't anything wrong in the code but could you try running it this way?代码没有任何问题,但是您可以尝试以这种方式运行它吗?

firebase.database().ref("playlists/1").once("value").then((snapshot) => {
  console.log(snapshot.val());
}).catch(e => {
  console.log(e);
})

Just in case you've share a small part of your code, then there is a typo in the word 'description'.以防万一您共享了一小部分代码,那么“描述”一词中就会出现拼写错误。 You might want to check if that's the same in your code else it'll log undefined.您可能想检查代码中是否相同,否则它将记录未定义。

Let me know if issue still persists.让我知道问题是否仍然存在。

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