Use this page to test CORS requests. You can either send the CORS request to a remote server (to test if CORS is supported), or send the CORS request to a test server (to explore certain features of CORS). Send feedback or browse the source here: https://github.com/monsur/test-cors.org.
var createCORSRequest = function(method, url) { var xhr = new XMLHttpRequest(); if ("withCredentials" in xhr) { // Most browsers. xhr.open(method, url, true); } else if (typeof XDomainRequest != "undefined") { // IE8 & IE9 xhr = new XDomainRequest(); xhr.open(method, url); } else { // CORS not supported. xhr = null; } return xhr; }; var url = ''; var method = ''; var xhr = createCORSRequest(method, url); xhr.onload = function() { // Success code goes here. }; xhr.onerror = function() { // Error code goes here. }; xhr.send();