FAQ: Requests II - fetch() GET Requests IV

This community-built FAQ covers the “fetch() GET Requests IV” exercise from the lesson “Requests II”.

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This exercise can be found in the following Codecademy content:

Web Development

Introduction To JavaScript

FAQs on the exercise fetch() GET Requests IV

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I’ve followed all the steps and checked them thrice. But the code doesn’t work. There are no errors from the test. But, upon submitting the word request on the website panel, no response is printed.
Not even using the “Give me the solution option”


I did everything as asked also took the solution from the system but the code doesn’t work. Upon checking the web console, got “Cross-Origin Request Blocked:”. Can someone include this in the lesson and explain why it happens?


Hi @oepa_one and @amit.naik
I also completed the exercise but it did not display anything. I can explain the problem but unfortunately, the solution is a bit difficult to implement, especially if not done on your local server.

Anyway, if you inspect the page and check the web console the error is

Access to fetch at 'https://api.datamuse.com/words?sl=testing' 
from origin 'https://b012ad7f62763a67b7ad2e5e6683c681.geppetto.cc-propeller.cloud' 
has been blocked by CORS policy: 
The 'Access-Control-Allow-Origin' 
header has a value 'https://7b64062ce855345e8942f3157a8afcfa.geppetto.cc-propeller.cloud'
that is not equal to the supplied origin. 
Have the server send the header with a valid value, or, if an opaque response serves your needs,

> set the request's mode to 'no-cors'

If you check the 'https://7b64062ce855345e8942f3157a8afcfa.geppetto.cc-propeller.cloud' you will find that the server is replying with Internal Error

After some googling to see how to

set the request’s mode to ‘no-cors’

I have found this explanation which is a bit technical

Explanation of the underlying problem
So I was not able to solve the problem
Hopefully, someone @ Code academy will respond to the issue


Could we get a response to this please?

const getSuggestions = () => {
const wordQuery = inputField.value;
const endpoint = ${url}${queryParams}${wordQuery};

fetch(endpoint).then(response => {
if (response.ok) {
return response.json();
throw new Error(‘Request failed!’);
}, networkError => {
.then(jsonResponse => {

My code passes every checkpoint, soooooo…where’s the functionality?


There’s an error in the library code for this exercise.

The following function contains 2 bugs; response in lines 40 & 41 should read res


I was able to successfully use renderResponse and get some results, but still see some errors with regards ‘The Same Origin Policy’ others were seeing.

Is this something to do with caching? I think the ones that are returning this error are words I’ve used previously in these exercises. If I pick other words I definitely haven’t used previously, I get results.

The link you provided explains how to make this work, but there’s quite a bit of information there, so it boils down to doing this: put the following proxy URL at the front of your original URL: https://cors-anywhere.herokuapp.com/. This means that your URL declaration might look like so:

const url = 'https://cors-anywhere.herokuapp.com/https://api.datamuse.com/words';

Yes, it looks odd, but it works.


Thanks, @chuckwondo. That indeed did fix the cross origin issue.
It would be reassuring to know if the Codecademy team was monitoring these boards. Can imagine it would be a bit maddening for a student who didn’t think to check the forums, or to view the browser console for errors.



Hello, thanks! it works. but why is it? and why didn’t the instruction told us to put this in before? Thanks!


How does the main,js access the renderResponse functon in helperFunction.js file as they have not been exported here

Hello @chloeoscar

How does the main,js access the renderResponse function in helperFunction.js file as they have not been exported here

hello @chuckwondo

How does the main,js access the renderResponse function in helperFunction.js file as they have not been exported here

Hi there

I’m also interested to know if someone from Codecademy is monitoring these boards on a regular basis, or is the expectation that the answers will be provided by other students?

Many thanks

1 Like

curious too, the thing i love most about codecademy is the instructor who can help here, since they don’t have that function anymore it is a bit harder to latch on. I truly appreciated all the people who helped here, but also wondering whether these are just nice students helping or actually staffs supporting the community.

The code works fine for me. I’m just curious what the “.word” method in wordList.push(<li>${res[i].word}</li>); is. I can’t find any documentation for an array.word method and I’m wondering what it is and how it works.

I completed each step of this exercise properly, eliciting the green check marks, but the app did not work.

So I reset the exercise and forced the page to provide me with the SOLUTION. And even then, the app still doesn’t work.

Here is my code:

const getSuggestions = () => {
  const wordQuery = inputField.value;
  const endpoint = `${url}${queryParams}${wordQuery}`;
  fetch(endpoint).then(response => {
    if (response.ok) {
      return response.json();
    throw new Error('Request failed!');
  }, networkError => {
  }).then(jsonResponse =>{

Thanks for reporting this issue!

It looks like headers were being cached between exercises and that led to some issues with this API. We’ve updated the exercise to use the argument {cache: 'no-cache'} for the affected exercises.

The fetch becomes: fetch(endpoint, {cache: 'no-cache'}).

This should fix the functionality in the embedded browser.

1 Like