getresponseheader-unsent-opened-state.htm (1195B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <title>XMLHttpRequest: getResponseHeader() in unsent, opened states</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <link rel="help" href="https://xhr.spec.whatwg.org/#dom-xmlhttprequest-getresponseheader" data-tested-assertations="/following::OL[1]/LI[1]" /> 8 </head> 9 <body> 10 <div id="log"></div> 11 <script> 12 var test = async_test() 13 test.step(function() { 14 var client = new XMLHttpRequest() 15 assert_equals(client.getResponseHeader("x-custom-header"), null) 16 client.onreadystatechange = function() { 17 test.step(function() { 18 if(client.readyState < 2) { 19 assert_equals(client.getResponseHeader("x-custom-header"), null) 20 assert_equals(client.getResponseHeader("CONTENT-TYPE"), null) 21 test.done() 22 } 23 }) 24 } 25 client.open("GET", "resources/headers.py") 26 assert_equals(client.getResponseHeader("x-custom-header"), null) 27 assert_equals(client.getResponseHeader("Date"), null) 28 client.send(null) 29 }) 30 </script> 31 </body> 32 </html>