LAB-08OPERATIONAL
Accessibility Lab
Department of the Invisible DOM
Two trees stand side by side: the DOM you wrote and the accessibility tree the browser derived from it. The difference between them is the entire discipline.
SEMANTICS UNDER OBSERVATION
accessibility treerolesnamesfocusARIAlive regions
LAB-08
Standing bench
Initialising benchEquipment warms up. Knowledge does not require it.
Experiments
- accessibilityENGINEER
The invisible DOM
There are two trees. You wrote one of them. Assistive technology reads the other.
accessibility10 min - accessibilityENGINEER
When focus order stops matching the page
The layout reads left to right. The Tab key does something else entirely, and CSS is the reason.
accessibility8 min