This tests the prototype chain of DOMException objects. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS e.toString() is "Error: HierarchyRequestError: DOM Exception 3" PASS Object.prototype.toString.call(e) is "[object DOMException]" PASS Object.prototype.toString.call(e.__proto__) is "[object DOMExceptionPrototype]" PASS Object.prototype.toString.call(e.__proto__.__proto__) is "[object Error]" PASS e.constructor.toString() is "[object DOMExceptionConstructor]" PASS e instanceof DOMException is true PASS e instanceof Error is true PASS e.constructor is window.DOMException PASS e.HIERARCHY_REQUEST_ERR is e.constructor.HIERARCHY_REQUEST_ERR PASS e.HIERARCHY_REQUEST_ERR is 3 PASS e.code is 3 PASS e.name is "HierarchyRequestError" PASS e.message is "HierarchyRequestError: DOM Exception 3" PASS successfullyParsed is true TEST COMPLETE