:focus-visible vs :focus Ring Difference
Compare actual caller focus state and independently observed UA focus-visible match; input modality alone does not universally determine visibility. Explicit supplied computed/layout context only; not a browser cascade/layout engine or cross-browser guarantee.
Description
Focus-visible adds a user-agent indication decision to the focused state.
Focus-visible adds a user-agent indication decision to the focused state.1
Its result differs from assuming every focused element should match the selector. Use :focus-visible vs :focus Ring Difference to evaluate the supplied inputs under the specific model below.
When to use :focus-visible vs :focus Ring Difference
Use :focus-visible vs :focus Ring Difference to evaluate the supplied inputs under the specific model below. Define the supplied layout, token or rendering scenario and establish the relevant units and browser context independently.
How to use :focus-visible vs :focus Ring Difference and understand its results
- Define the supplied layout, token or rendering scenario and establish the relevant units and browser context independently.
- Enter Independently focused, Ua focus visible match using the field table and validation rules below, then run the tool.
- Read Focus selector matches, Focus visible selector matches and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlyFocused | Independently focused | boolean | Required; constraints below |
| uaFocusVisibleMatch | Ua focus visible match | boolean | Required; constraints below |
Enter independently established focused and focus-visible-match booleans. Return their conjunction as the modeled visible focus state. This does not implement a user agent's focus-visible heuristic, detect input modality or inspect the actual focus ring.
visibleFocus = focused and matchesFocusVisible Field order, units and branch conditions follow the implementation explanation above.
| Output field | Meaning | Value type |
|---|---|---|
| focusSelectorMatches | Focus selector matches | boolean |
| focusVisibleSelectorMatches | Focus visible selector matches | boolean |
{
"input": {
"independentlyFocused": true,
"uaFocusVisibleMatch": false
},
"output": {
"focusSelectorMatches": true,
"focusVisibleSelectorMatches": false
}
}Limitations and assumptions
Its result differs from assuming every focused element should match the selector. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
Alternative or Complementary methods
Use resize Both Axes Horizontal/Vertical for a related task: Resize values specify physical or logical user-resizing axes.
Use pointer-events:none Hit-Test Bypass Note for a related task: Pointer targeting and keyboard focus are separate interaction mechanisms.
References
-
:focus-visible vs :focus Ring Difference — tool.io
Similar or alternative tools
- resize Both Axes Horizontal/Vertical
Resize values specify physical or logical user-resizing axes.
- pointer-events:none Hit-Test Bypass Note
Pointer targeting and keyboard focus are separate interaction mechanisms.