| <!doctype html> |
| <html> |
| <head> |
| <title>XMLHttpRequest: implements EventTarget</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#xmlhttprequesteventtarget" data-tested-assertations=".." /> |
| <!-- Obviously, most of the stuff actually being tested here is covered in the DOM events spec, not in the XHR spec --> |
| </head> |
| <body> |
| <div id="log"></div> |
| <script> |
| var test = async_test(), |
| x = null, |
| expected = ["a1", "b1", "c1", "a2", "b2", "c2", "a3", "c3", "a4", "c4"], |
| result = [] |
| function callback(e) { |
| result.push("b" + x.readyState) |
| test.step(function() { |
| if(x.readyState == 3) |
| assert_unreached() |
| }) |
| } |
| test.step(function() { |
| x = new XMLHttpRequest() |
| x.onreadystatechange = function() { |
| test.step(function() { |
| result.push("a" + x.readyState) |
| }) |
| } |
| x.addEventListener("readystatechange", callback, false) |
| x.addEventListener("readystatechange", function() { |
| test.step(function() { |
| result.push("c" + x.readyState) |
| if(x.readyState == 2) |
| x.removeEventListener("readystatechange", callback, false) |
| if(x.readyState == 4) { |
| assert_array_equals(result, expected) |
| test.done() |
| } |
| }) |
| }, false) |
| x.open("GET", "folder.txt") |
| x.send(null) |
| }) |
| </script> |
| </body> |
| </html> |
