Go to overview: Standard HTML mark-up in screenreader tests
headers
/id
and scope="rowgroup"
Detlev Fischer, (detlev [dot] fischer [ at ] testkreis [dot] de)
Last update: 17 September 2012
headers
and id
suborder | species | Length m | Weight kg | Max. age years |
---|---|---|---|---|
Baleen whales | Humpback whale | 12 to 16 | 36,000 | 45 to 100 |
Pygmy right whale | 6.5 | 3,500 | unknown | |
Toothed whales | Long-Beaked Common Dolphin | 1.9 to 2.5 | 80 to 235 | 8 to 9 |
Orca whale | 8 | 6000 | 50 to 60 |
id
and headers
: Results for screen reader testsWin 7, IE 9, JAWS 13 | Consistent but uneven behavior. Non-linear table content navigation with (STR + ALT + arrow keys): JAWS reads changing headers, but unevenly:
This behaviour makes sense when navigating a column from top to bottom but can be a problem when navigating bottom to top whenever the top-level header is important for differentiation (especially when crossing from one rowgroup to the rowgroup above). Reading the individual cell (presumably with all associated headers) requires key command STR + ALT + num pad 5 (not available on laptop). |
---|---|
Win 7, FF 13, JAWS 13 | Exactly the same behaviour as under WIN 7, IE9, JAWS 13 above. |
Win 7, FF 13, NVDA | Consistent but uneven behavior. Linear reading: NVDA reads row headers with associated column headers, then differently depending on whether it is the first or second row in the rowgroup. For the first row in the rowgroup, it reads top-level row header + secondary row header + column header + column number + cell content each time (which is quite verbose), for the second row it reads just first top-level + column header + column number + cell content. Non-linear table content navigation with (STR + ALT + arrow keys): NVDA reads headers unevenly.
Bug? NVDA reads contents of |
Win 7, IE9, NVDA | Headers not read by NVDA in IE9. In-table navigation (CTR + ALT + arrow keys) just reads column number + cell content. Same erratic behaviour as in table marked up with headers /id regarding up/down navigation between content cells (STR + ALT + Arrow keys). |
Win XP, FF 15.0, NVDA 2011.3 | Same behaviour as described for NVDA and Firefox under WIN 7 above. |
Win XP, IE 8, NVDA 2011.3 | NVDA under IE 8 does not read any headers, just column number, then content. Aside: Table cell navigation with (STR + ALT + arrow keys) seems to be buggy, moving up and down wih arrows sometimes moves diagonally. |
Win XP, IE 8, SaToGo | In table navigation (STR + ALT + arrow keys), JAWS under IE9 just reads the content of the data cells, no headers, no column number. |
Mac OS 10.5.8, VoiceOver | Cannot get VoiceOver to read headers even though VO settings are set to read headers. Some commands do not seem to work (e.g., Control-Option + T to jump to table, or Control-Option + R to read row in table). If anyone can help out to complement / verify these results for VO, please get in touch! (detlev [dot] fischer [ at ] testkreis [dot] de) |
scope="rowgroup"
suborder | species | Length m | Weight kg | Max age years |
---|---|---|---|---|
Baleen whales | Humpback whale | 12 to 16 | 36,000 | 45 to 100 |
Pygmy right whale | 6.5 | 3,500 | unknown | |
Toothed whales | Long-Beaked Common Dolphin | 1.9-2.5 | 80 to 235 | 8 to 9 |
Orca whale | 8 | 6000 | 50 to 60 |
scope="rowgroup"
: Results for screen reader testsWin 7, IE 9, JAWS 13 | Exactly the same behaviour as in table marked up with headers /id above. |
---|---|
Win 7, FF 13, JAWS 13 | Exactly the same behaviour as under WIN 7, IE9, JAWS 13 above. |
Win 7, FF 13, NVDA | Linear reading: With NVDA and Firefox, mark-up with Non-linear table content navigation with (STR + ALT + arrow keys):
Problem: Since the top-level header is not read (unless users navigate to it or read the entire row), ambiguity exists whenever the top-level row header is critical for the differentiation of rows. Bug? NVDA reads contents of |
Win 7, IE9, NVDA | Headers not read by NVDA in IE9, just column number. Same behaviour as for table marked up with headers /id . Aside: Table cell navigation with (STR + ALT + arrow keys) seems to be buggy, moving up and down wih arrows sometimes moves diagonally. |
Win XP, FF 15.0, NVDA 2011.3 | Same behaviour as under Win7 FF13 NVDA. |
Win XP, IE 8, NVDA 2011.3 | Same as under NVDA under Win7 and IE 9 above. |
Win XP, IE 8, SaToGo | In table navigation (STR + ALT + arrow keys), SaToGo under IE8 reads no headers, no column number, just reads the content of cells. |
Mac OS 10.5.8, VoiceOver | ??? See note above. |