I need help with - Cross-Origin Request Blocked

Hi all,

I am on a mac trying to get a result back from this code below.

On the app Postman (on mac) is works fine, However I get these errors below when pasted into a basic test html page...

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://chosenpayments.transactiongateway.com/api/query.php. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://chosenpayments.transactiongateway.com/api/query.php. (Reason: CORS request did not succeed).

Also: I have no access to the site - chosenpayments.transactiongateway.com

Q: How can I get the html page to not get *Cross-Origin Request Blocked* errors when the postman app works with no problems?

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<script>

var form = new FormData();

form.append("username", "xxx");

form.append("password", "xxx");

form.append("transaction_id", "xxx");

form.append("", "");

var settings = {

"async": true,

"crossDomain": true,

"url": "https://chosenpayments.transactiongateway.com/api/query.php",

"method": "POST",

"headers": {

"cache-control": "no-cache",

"Postman-Token": "f397621c-8738-4b3c-a137-e0fa755a04ec"

},

"processData": false,

"contentType": false,

"mimeType": "multipart/form-data",

"data": form

}

$.ajax(settings).done(function (response) {

console.log(response);

});

  </script>