我有很多这样的链接:
let array = ['https://1','https://2','https://3']
比起我想循环所有元素并对其进行读取。仍然是异步提取的,因此我得到了更多请求,这样就解决了从数组中删除元素的问题:
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)
})
我想知道有更好的解决方案吗?
答案 0 :(得分:1)
您想为此使用Promise.all:
// 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
})
答案 1 :(得分:0)
在这种情况下,我将使用Promise.all()
。首先从每个响应中获取身体。然后在完成各自的承诺后对响应进行一些处理:
let urls = ['https://1','https://2','https://3']
Promise.all(urls.map(url =>
// do something with this response like parsing to JSON
fetch(url,{mode: 'no-cors'}).then(response => response)
)).then(data => {
// do something with the responses data
})