rdio-cors-example.js

var url = 'https://services.rdio.com/api/1/';
var oReq = new XMLHttpRequest();

oReq.onload = function(e) {
  if(oReq.readyState === 4) {
    if(oReq.status === 200) {
      var response = JSON.parse(oReq.responseText);
      console.info(response);
    } else {
      console.error(oReq);
    }
  }
};

oReq.onerror = function(e) {
  console.log(oReq);
};

oReq.open('POST', url, true);
oReq.setRequestHeader('Authorization', 'Bearer ACCESS_TOKEN');
oReq.send('method=noop');