The XMLHttpRequest.responseURL property returns the serialized URL of the response or the empty string if the URL is null. If the URL is returned, URL fragment if present in the URL will be stripped away. The value of responseURL will be the final URL obtained after any redirects.
Example
var xhr = new XMLHttpRequest();
xhr.open('GET', 'http://example.com/test', true);
xhr.onload = function () {
  console.log(xhr.responseURL); // http://example.com/test
};
xhr.send(null);
Specifications
 
  
   | Specification | Status | Comment | 
  
   | XMLHttpRequest | Living Standard | WHATWG living standard | 
 
Browser compatibility
 
  
   | Feature | Chrome | Firefox (Gecko) | Internet Explorer | Edge | Opera | Safari (WebKit) | 
  
   | Basic support | 37.0 | 32.0 (32.0) | No support | 14 | 24 | 8.0 | 
 
 
 
  
   | Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | 
  
   | Basic support | ? | ? | ? | ? | ? | ? | 
 
 
 
              
                
                
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