I want to know if there is any way to get the value of ref inside an async function.
the code below show the example for my problem:
var results =ref([])
projectFirestore.collection('patients').where('ssn', '==', '211').onSnapshot((snap) => {
snap.docs.forEach((doc) => {
results.value.push(doc.data());
})
})
console.log(results.value.length);
the output of the console is 0, but if I move the console function inside the function it will print ’21’ (the length of array that retrieved from DB)