10.Question 10How can a function fetchData be implemented in JavaScript to fetch data from a remote server using an asynchronous API call that takes a URL and returns a promise that resolves with the fetched data or rejects with an error message if the request fails?1 pointfunction fetchData(url) {<br> return fetch(url).then(response => {<br> if (!response.ok) {<br> throw new Error("Request failed.");<br> }<br><br> return response.json();<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.status !== 200) {<br> throw new Error("Request failed.");<br> }<br><br> return response.json();<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.ok) {<br> return response.json();<br> } else {<br> throw new Error("Request failed.");<br> }<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.status === 200) {<br> return response.json();<br> } else {<br> throw new Error("Request failed.");<br> }<br> });<br>}
Question
10.Question 10How can a function fetchData be implemented in JavaScript to fetch data from a remote server using an asynchronous API call that takes a URL and returns a promise that resolves with the fetched data or rejects with an error message if the request fails?1 pointfunction fetchData(url) {<br> return fetch(url).then(response => {<br> if (!response.ok) {<br> throw new Error("Request failed.");<br> }<br><br> return response.json();<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.status !== 200) {<br> throw new Error("Request failed.");<br> }<br><br> return response.json();<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.ok) {<br> return response.json();<br> } else {<br> throw new Error("Request failed.");<br> }<br> });<br>}function fetchData(url) {<br> return fetch(url).then(response => {<br> if (response.status === 200) {<br> return response.json();<br> } else {<br> throw new Error("Request failed.");<br> }<br> });<br>}
Solution
The correct implementation of the function fetchData in JavaScript is:
function fetchData(url) {
return fetch(url).then(response => {
if (response.ok) {
return response.json();
} else {
throw new Error("Request failed.");
}
});
}
This function uses the fetch API to make a request to the provided URL. The fetch API returns a promise that resolves to the Response object representing the response to the request. This response object includes the ok property, which is a boolean indicating whether the response was successful (status in the range 200-299) or not.
If the response was successful (response.ok is true), the function returns a promise that resolves with the result of parsing the body text as JSON.
If the response was not successful, the function throws an error with the message "Request failed.". This error will be caught by the promise chain and can be handled with a .catch() block.
Similar Questions
fetch() returns a Promise that resolves to the Response to that request, whether it is successful or not.
Which of the following is a valid way to use async/await with fetch to make an API call?Aasync function fetchAPI() { const response = await fetch('https://example.com/api'); const data = await response.json(); return data;}Bfunction fetchAPI() { fetch('https://example.com/api') .then(response => response.json()) .then(data => console.log(data)) .catch(error => console.error(error));}Casync function fetchAPI() { try { const response = await fetch('https://example.com/api'); const data = await response.json(); return data; } catch(error) { console.error(error); }}Dasync function fetchAPI() { const response = await fetch('https://example.com/api') .then(response => response.json()) .catch(error => console.error(error)); return response;}
.then((response) => { if (!response.ok) { throw new Error('Network response was not ok'); } return response.json(); }) .then((data) => { console.log('Success:', data); }) .catch((error) => { console.error('Error:', error); }); };
const handleSubmit = (e) => { e.preventDefault(); const userData = { username, email, password }; fetch('http://localhost:8080/signup', { method: 'POST', headers: { 'Content-Type': 'application/json', }, body: JSON.stringify(userData), }) .then((response) => { if (!response.ok) { throw new Error('Network response was not ok'); } return response.json(); }) .then((data) => { console.log('Success:', data); }) .catch((error) => { console.error('Error:', error); }); };
explain fetchapi in js
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.