问我可以使用localforage的返回吗？

EN

localforage.getItem('authtoken').then(function(value) {
    // This code runs once the value has been loaded
    // from the offline store.
    console.log(value);
}).catch(function(err) {
    // This code runs if there were any errors
    console.log(err);
});

// Callback version:
localforage.getItem('authtoken', function(err, value) {
    // Run this code once the value has been
    // loaded from the offline store.
    console.log(value);
});

// async/await
try {
    const value = await localforage.getItem('authtoken');
    // This code runs once the value has been loaded
    // from the offline store.
    console.log(value);
} catch (err) {
    // This code runs if there were any errors.
    console.log(err);
}