how can I toggle a boolean parameter in javascript?

Question

I want to toggle a value called 'session' and then, update this value.

i've tried to do session=,session. but that didn't work, session is a parameter inside a object, this object are displayed on my nosql database. i'm using the realtime database from firebase.

however session:true and session:false works

obs: English isn't my first lenguage, so sorry if I used wrong words.

Answer 1

Since you want to write a value to a path based on its existing value, you'll want to use a transaction .

Something like:

const userRef = ref(db, `/usuários/${fistKey}/session`);

runTransaction(userRef, (session) => {
  if (session) {
    return !session
  }
  return true; // 👈 default value
});