The REST API request returns a response code of 0

I have been attempting to make an API call to the Insightly API using this code:

var x = new XMLHttpRequest();
x.open("GET", "https://api.insight.ly/v2.2/Projects/Search?status=in%20progress&brief=false&count_total=false", true);
x.setRequestHeader('Authorization', 'Basic: 'some-basic-key-and-user');
x.send();

console.log(x.status);

However, the response code I receive is always 0.

To troubleshoot, I used hurl.it's tool with my URL and AuthKey, and it gave me the correct response. I also tried using x.statusText and x.Response.

Why is my script not providing the necessary output?

EDIT:

Even after implementing parameters recommended by Mozilla's documentation (thanks to Amy), I still cannot get the correct response code.

My updated code snippet:

var x = new XMLHttpRequest();
x.open("GET", "https://api.insight.ly/v2.2/Projects/Search?status=in%20progress&brief=false&count_total=false", true);
x.setRequestHeader('Authorization', 'Basic: b4c6c660-e20f-4f31-b90d-b6a11bfe4ef2');


x.onprogress = function () {
  console.log('LOADING', x.status);
};
x.onload = function () {
  console.log('DONE', x.status);
};

x.send();

console.log(x.status);

The response code logged:

0
LOADING 0

Despite reviewing possible solutions, I am still unsure how to resolve this issue. While I understand the asynchronous nature of the request, I lack the knowledge of how to rectify it.

Answer №1

Initially, there seems to be an unnecessary quotation mark on line 3 right after "some-basic-key-and-user." Another issue is that the insight API does not support cross-origin resource sharing (CORS for short). It may be advisable to implement a proxy on the same domain from which you are querying data.

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