Tom*_*sek 5 javascript asynchronous
我需要等待两个fetch()API 调用,然后将每次获取的数据保存到不同的窗口对象。我发现这篇文章https://gomakethings.com/waiting-for-multiple-all-api-responses-to-complete-with-the-vanilla-js-promise.all-method/并尝试使用以下代码来等待API调用:
Promise.all([
fetch('https://jsonplaceholder.typicode.com/todos/1'),
fetch('https://jsonplaceholder.typicode.com/todos/2')
]).then(function (responses) {
// Get a JSON object from each of the responses
return Promise.all(responses.map(function (response) {
return response.json();
}));
}).then(function (data) {
// Log the data to the console
// You would do something with both sets of data here
console.log(data);
}).catch(function (error) {
// if there's an error, log it
console.log(error);
});
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但是,将其粘贴到浏览器控制台时,不会记录结果。
代码有什么问题以及如何等待两者都得到解决?
const fetchData = async () => {
try {
const responsesJSON = await Promise.all([
fetch('https://jsonplaceholder.typicode.com/todos/1'),
fetch('https://jsonplaceholder.typicode.com/todos/2')
]);
const [todoOne, todoTwo] = await Promise.all(responsesJSON.map(r => r.json()));
console.log(todoOne, 'todoOne');
console.log(todoTwo, 'todoTwo');
} catch (err) {
throw err;
}
};
fetchData();Run Code Online (Sandbox Code Playgroud)
可能正在寻找类似的东西。