Request a file as the Text type with asynchronous XMLHttpRequest in a document context. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS req.status is 200 PASS req.response is "PASS" PASS req.status is 200 PASS req.response is "PASS" PASS FAIL req.status is 200 PASS should be 200. Was 0. FAIL req.response is "PASS" should be PASS. Was . PASS successfullyParsed is true TEST COMPLETE