const forLoop = async _ => {
console.log('Start')
for (let index = 0; index < fruitsToGet.length; index++) {
const fruit = fruitsToGet[index]
const numFruit = await getNumFruit(fruit)
console.log(numFruit)
}
console.log('End')
}
for循环await、async这样就没问题
foreach不支持await,async
map：
const mapLoop = async _ => {
console.log('Start')
const promises = fruitsToGet.map(async fruit => {
const numFruit = await getNumFruit(fruit)
return numFruit
})
const numFruits = await Promise.all(promises)
console.log(numFruits)
console.log('End')
}
