My counter is reset after exiting the loop - arrays

Question

My counter count resets after each time the second forEach loop exits but it is not meant to be reset, as when I console log inside the second loop the numbers are correct but with no luck.
let arr = [];
var count;
result.forEach(server => {
count = 0;
sql.query(`SELECT * FROM users WHERE server='${server.server}';`, async (error, results) => {
if (error) {
console.log(error);
}
results.forEach(user => {
if(user.key_deactivated == 'false') {
count++;
}
});
console.log(count);
});
arr.push({
server: server.server,
name: server.name,
plan_id: server.plan_id,
mb_stripe: server.mb_stripe,
description: server.description,
key_stock: server.key_stock,
channel: server.channel,
active: count
});
});
res.render('pages/administrator', {result: result, user: req.user, arr: arr});

Answer 1

you are using callback function and callback function is part of asynchronous behavior. means js pushes it to a callback queue to execute it later. so the count value is being accessed before the callback can change it.
let arr = [];
var count;
result.forEach(server => {
count = 0;
sql.query(`SELECT * FROM users WHERE server='${server.server}';`, async (error, results) => {
if (error) {
console.log(error);
}
results.forEach(user => {
if(user.key_deactivated == 'false') {
count++;
}
});
console.log(count);
arr.push({
server: server.server,
name: server.name,
plan_id: server.plan_id,
mb_stripe: server.mb_stripe,
description: server.description,
key_stock: server.key_stock,
channel: server.channel,
active: count
});
res.render('pages/administrator', {result: result, user: req.user, arr: arr});
});
});
for more information on callback check this out. https://developer.mozilla.org/en-US/docs/Glossary/Callback_function

Answer 2

Welcome to callback hell.
"Abandon all hope, ye who enter here."
Dante Alighieri
The less poetic description of your issue is that you are using callbacks and expect them to be executed before the code you see after them. But it is not how they work. Let me explain what your code does:
It iterates result and for each instance it sets count to 0 and asynchronously waits for a query to execute and while waiting for the query to execute, without actually waiting it to be executed it pushes objects (containing count) to arr. But count is not yet refreshed yet, the queries are still being executed. Just put this code
arr.push({
server: server.server,
name: server.name,
plan_id: server.plan_id,
mb_stripe: server.mb_stripe,
description: server.description,
key_stock: server.key_stock,
channel: server.channel,
active: count
});
just after your console.log.