<!DOCTYPE html> <html> <head> <title>XMLHttpRequest: getResponseHeader() custom/non-existent headers and cookies</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <link rel="help" href="https://xhr.spec.whatwg.org/#dom-xmlhttprequest-getresponseheader" data-tested-assertations="following::OL[1]/LI[3] following::OL[1]/LI[5] following::OL[1]/LI[6]" /> </head> <body> <div id="log"></div> <script> var test = async_test() test.step(function() { var client = new XMLHttpRequest() client.onreadystatechange = function() { test.step(function() { if(client.readyState == 1) { assert_equals(client.getResponseHeader("x-custom-header"), null) } if(client.readyState > 1) { assert_equals(client.getResponseHeader("x-custom-header"), "test") assert_equals(client.getResponseHeader("x-custom-header-empty"), "") assert_equals(client.getResponseHeader("set-cookie"), null) assert_equals(client.getResponseHeader("set-cookie2"), null) assert_equals(client.getResponseHeader("x-non-existent-header"), null) } if(client.readyState == 4) test.done() }) } client.open("GET", "resources/headers.py") client.send(null) }) </script> </body> </html>