| <!doctype html> |
| <meta charset=utf-8> |
| <title>Prototype chain of the window object</title> |
| <link rel="author" title="Ms2ger" href="ms2ger@gmail.com"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#window"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#eventtarget"> |
| <link rel="help" href="https://heycam.github.io/webidl/#interface-prototype-object"> |
| <link rel="help" href="https://heycam.github.io/webidl/#named-properties-object"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id=log></div> |
| <script> |
| test(function() { |
| assert_class_string(window, "Window"); |
| }, "window object"); |
| test(function() { |
| var proto = Object.getPrototypeOf(window); |
| assert_class_string(proto, "WindowPrototype"); |
| assert_equals(proto, Window.prototype); |
| }, "Window.prototype"); |
| test(function() { |
| var gsp = Object.getPrototypeOf(Object.getPrototypeOf(window)); |
| assert_class_string(gsp, "WindowProperties"); |
| }, "Global scope polluter"); |
| test(function() { |
| var protoproto = Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(window))); |
| assert_class_string(protoproto, "EventTargetPrototype"); |
| assert_equals(protoproto, EventTarget.prototype); |
| }, "EventTarget.prototype"); |
| test(function() { |
| var protoprotoproto = Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(window)))); |
| assert_class_string(protoprotoproto, "Object"); |
| assert_equals(protoprotoproto, Object.prototype); |
| }, "Object.prototype"); |
| </script> |
