how to return the value from an async function in the array.map I am trying to access the value from them but I am getting Array [[object Promise], [object Promise], [object Promise], [object Promise]]?
I want async inside the array1.map because I have some process that takes time so I need to use await.
var array1 = [1, 4, 9, 16];
// pass a function to map
const test = async ()=>{
const map1 = await array1.map(async x => 'hi');
return map1;
// expected output: Array [2, 8, 18, 32]
}
test().then((data)=>{
console.log(data)
})
expected output: Array ['hi', 'hi', 'hi', 'hi'] my output: [[object Promise], [object Promise], [object Promise], [object Promise]]
You need to use Promise.all function, where you put your array of promises
var array1 = [1, 4, 9, 16];
// pass a function to map
const test = async () => {
const map1 = await Promise.all(array1.map(async x => 'hi'));
return map1;
}
test().then((data) => {
console.log(data)
});expected output: Array ['hi', 'hi', 'hi', 'hi']
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