6 replies

Other external function being executed while await waits for promise in "inner" function

Hello, I have a question when it comes to JS returning

promises

promises

, more specifically with

async

async

and

await

await

.

Consider these code:

async function fetchProducts() {

  ...
  const result = await somethingThatReturnAPromise();
}

function checkNumberOfProducts() {...}

function start() {
  fetchProducts()
  checkNumberOfProducts()
}

async function fetchProducts() {

  ...
  const result = await somethingThatReturnAPromise();
}

function checkNumberOfProducts() {...}

function start() {
  fetchProducts()
  checkNumberOfProducts()
}

start

start

is a function that "runs" our app. My question is when we

await

await

inside our

fetchProducts()

fetchProducts()

that is we are waiting for the promise to be resolved, inside

start()

start()

, does execution shifts to

checkNumberOfProduct()

checkNumberOfProduct()

even though

fetchProducts()

fetchProducts()

hasn't been completed? If so, can someone explain why pls.

KP-C

Kevin Powell - Community•4mo ago•

6 replies

Faker

Other external function being executed while await waits for promise in "inner" function

Hello, I have a question when it comes to JS returning

promises

promises

, more specifically with

async

async

and

await

await

.

Consider these code:

async function fetchProducts() {

  ...
  const result = await somethingThatReturnAPromise();
}

function checkNumberOfProducts() {...}

function start() {
  fetchProducts()
  checkNumberOfProducts()
}

async function fetchProducts() {

  ...
  const result = await somethingThatReturnAPromise();
}

function checkNumberOfProducts() {...}

function start() {
  fetchProducts()
  checkNumberOfProducts()
}

start

start

is a function that "runs" our app. My question is when we

await

await

inside our

fetchProducts()

fetchProducts()

that is we are waiting for the promise to be resolved, inside

start()

start()

, does execution shifts to

checkNumberOfProduct()

checkNumberOfProduct()

even though

fetchProducts()

fetchProducts()

hasn't been completed? If so, can someone explain why pls.

Other external function being executed while await waits for promise in "inner" function

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