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detect-pointer
Advanced tools
Readme
JavaScript wrapper for pointer
and any-pointer
media queries.
Exports a reference to a singleton object (a micro state machine with an update function) with its state set to the results of the pointer
and any-pointer
media queries, as well as an update()
function which re-runs the tests and updates the object's state.
Note that detect-pointer
is one of the micro state machines used by detect-it
to determine if a device is mouseOnly
, touchOnly
, or hybrid
.
For more information on the pointer
and any-pointer
media queries, please see the W3C Media Queries Level 4 specification. For information on browser compatibility, please see Can I Use matchMedia.
detectPointer
micro state machineconst detectPointer = {
// mutually exclusive (only one will be true)
fine: boolean,
coarse: boolean,
none: boolean,
// not mutually exclusive
anyFine: boolean,
anyCoarse: boolean,
anyNone: boolean,
// re-run all the detection tests and update state
update() {...},
}
detect-pointer
$ npm install detect-pointer
detect-pointer
import detectPointer from 'detect-pointer';
// using the state
detectPointer.fine === true; // primary pointing device is accurate (e.g. mouse, stylus)
detectPointer.coarse === true; // primary pointing device has limited accuracy (e.g. touch, motion)
detectPointer.none === true; // primary input mechanism does not include a pointing device
/*
* identical to the pointer media feature, but they correspond to the
* union of capabilities of all the pointing devices available to the user -
* more than one of their values can be true, if different input mechanisms have
* different characteristics
*/
detectPointer.anyFine === true;
detectPointer.anyCoarse === true;
detectPointer.anyNone === true;
// updating the state - most apps won't need to use this at all
detectPointer.update();
/*
* note that in the case of a legacy computer and browser, one that
* doesn't support detect-pointer's detection tests, the default state will be:
*/
const detectPointer = {
fine: undefined,
coarse: undefined,
none: undefined,
anyFine: undefined,
anyCoarse: undefined,
anyNone: undefined,
}
Note that the update()
function is run once at the time of import to set the object's initial state, and generally doesn't need to be run again. If it doesn't have access to the window
or the browser doesn't support the matchMedia()
function (all modern browser do), then the state will be undefined
(detect-pointer
will not throw an error). If detect-pointer
doesn't have access to the window
at the time of import, you will have to call the update()
function manually at a later time to update its state.
detect-it
familyFAQs
JavaScript wrapper for pointer and any-pointer media queries
We found that detect-pointer demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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