本文介绍了在 foreach 循环中获取多个链接的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
I have array of links like so:
let array = ['https://1','https://2','https://3']
Than i want to loop all elements and run fetch on them. Still fetch is async so i get request more times i deal this problem removing element from array like so:
array.forEach((link,index) => {
fetch(link, {mode: 'no-cors'}).then(function () {
//more stuff not inportant
}).catch(e => {
console.error('error', e);
});
array.splice(index,1)
})
I wonder is there better solution to solve this ?
解决方案
You want to use Promise.all for this, like so:
// store urls to fetch in an array
const urls = [
'https://dog.ceo/api/breeds/list',
'https://dog.ceo/api/breeds/image/random'
];
// use map() to perform a fetch and handle the response for each url
Promise.all(urls.map(url =>
fetch(url)
.then(checkStatus)
.then(parseJSON)
.catch(logError)
))
.then(data => {
// do something with the data
})
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