touch-action Gesture Whitelist Lookup
Supported single-value touch-action permission semantics; actual gesture result intersects ancestor values at gesture start. Explicit supplied computed/layout context only; not a browser cascade/layout engine or cross-browser guarantee.
Description
Touch-action declares permitted browser handling of direct manipulation.
Touch-action declares permitted browser handling of direct manipulation.1
Its value does not identify hardware or simulate event dispatch and gesture recognition. Use touch-action Gesture Whitelist Lookup to look up a supported term.
When to use touch-action Gesture Whitelist Lookup
Use touch-action Gesture Whitelist Lookup to look up a supported term. Choose the exact supported token from the table; preserve its punctuation and capitalization.
How to use touch-action Gesture Whitelist Lookup and understand its results
- Choose the exact supported token from the table; preserve its punctuation and capitalization.
- Enter Touch action using the field table and validation rules below, then run the tool.
- Read Meaning 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 |
|---|---|---|---|
| touchAction | Touch action | string | Required; constraints below |
Enter one of the exact supported touchAction tokens in the table below. The implementation performs a case-sensitive lookup and returns the stored meaning without interpreting a stylesheet, audio recording or performance. Unsupported tokens, added whitespace and alternate capitalization are input errors. The entries describe a bounded vocabulary rather than every valid value in the wider topic.
meaning = storedTable[exactSupportedToken] Field order, units and branch conditions follow the implementation explanation above.
| Exact supported token | Stored meaning |
|---|---|
| auto | UA permitted to handle supported direct-manipulation gestures |
| none | no UA direct-manipulation panning or zooming for this value |
| pan-x | permits horizontal panning |
| pan-y | permits vertical panning |
| pinch-zoom | permits pinch zoom |
| manipulation | permits panning and pinch zoom; disables additional gestures such as double-tap zoom |
| Output field | Meaning | Value type |
|---|---|---|
| meaning | Stored explanation for the exact supported token. | string |
{
"input": {
"touchAction": "manipulation"
},
"output": {
"meaning": "permits panning and pinch zoom; disables additional gestures such as double-tap zoom"
}
}Limitations and assumptions
Its value does not identify hardware or simulate event dispatch and gesture recognition. 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 @media hover:none Touch Device Classifier for a related task: Hover and pointer media features describe input capabilities.
References
-
touch-action Gesture Whitelist Lookup — tool.io
Similar or alternative tools
- resize Both Axes Horizontal/Vertical
Resize values specify physical or logical user-resizing axes.
- @media hover:none Touch Device Classifier
Hover and pointer media features describe input capabilities.