Tests null handling of HTMLSelectElement.value attribute On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". select.value = 'a' PASS select.value is "a" PASS select.selectedIndex is 0 select.value = null PASS select.value is "null" PASS select.selectedIndex is 1 select.value = 'a' PASS select.value is "a" PASS select.selectedIndex is 0 select.value = null PASS select.value is "" PASS select.selectedIndex is -1 PASS successfullyParsed is true TEST COMPLETE