Create an HTTPS request

Questions
1

Hello Square support.

I am trying to retrieve the list of customers in my account through the REST API, as noted in the documentation. However, when I run the code below I am not receiving any response, and the xhttp.responseText is NULL.
Could you please provide me with any guidance on how to complete this task?
Thank you in advance.

    const endpoint = 'https://connect.squareup.com/v2/customers/search';
    var accesstoken = 'EAAAEB4lmEG*********P0gtakZYxubfGN'  //production

    const xhttp = new XMLHttpRequest();
 
    xhttp.open('POST', endpoint, true); 
    xhttp.setRequestHeader('Content-Type', 'application/json');
    xhttp.setRequestHeader('Authorization', 'Bearer ' + accesstoken);              
    const requestBody = JSON.stringify({
        'query': {
            'filter': {}
        }
    });
  
    xhttp.send(requestBody);
    const response = xhttp.responseText;
2

Whats your application ID? :slight_smile:

3

Hello Bryan

Here is my app ID sandbox-sq0idb-1IW4o2k_sK-fxFviTssK5A

I did find an error after viewing dev options regarding Access-Control-Allow-Origin

Let me know if you need anything else

4

Is this call happening on the client? If so it will throw this error. You’ll need to make sure that this call is a server side API call. :slight_smile:

5

Hello Bryan

My application is a Microsoft addin that is written in javascript. The app will do the http request so there is no server involved.

In dev mode I found this error. Any ideas?

A cross-origin resource sharing (CORS) request was blocked because of invalid or missing response headers of the request or the associated preflight request .

To fix this issue, ensure the response to the CORS request and/or the associated preflight request are not missing headers and use valid header values.

Thanks

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