detect-touch

Detects if a device has a touch interface

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detect-touch
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---

This has been deprecated in favor of Detect It

Detect Touch Devices
 
Live touch detection testliveTest
detect-touch will detect if a device has a touch interface. It provides both a boolean one time touch detection on import, as well as a function to run the touch detection at any time.
 

Installing detect-touch

$ npm install --save detect-touch
 

Importing detect-touch

Importing only the hasTouch boolean:
import { hasTouch } from 'detect-touch';
// or
var hasTouch = require('detect-touch').hasTouch;

Importing only the detectTouch function:
import { detectTouch } from 'detect-touch';
// or
var detectTouch = require('detect-touch').detectTouch;

Importing both the hasTouch boolean and the detectTouch function:
import { hasTouch, detectTouch } from 'detect-touch';
// or
var hasTouch = require('detect-touch').hasTouch;
var detectTouch = require('detect-touch').detectTouch;

 

Using detect-touch

The hasTouch boolean is established at the time it is imported, and the function to detect a touch device runs only one time. In most cases this is all you need.
// Using the hasTouch boolean:
hasTouch === true;
// or
hasTouch === false;

The detectTouch function attempts to detect a touch device each time it is called and can be used to check or recheck for a touch device at a specific time. Returns a boolean. For example, if detect-touch doesn't have access to the window when it is imported you'll need to wait until it does before checking if a device has a touch interface.
// Using the detectTouch function:
detectTouch() === true;
// or
detectTouch() === false;

 

Detection Tests

detect-touch checks to see if the browser implements any of the following:
The standard W3C Touch Events APIw3cTE (this is the vast majority of touch devices), by checking for:
'ontouchstart' in window
Number of touch points (required to detect Microsoft's Pointer Events API running on a touch devicemaxTP, however, devices not implementing Pointer Events may also indicate this), by checking for:
window.navigator.maxTouchPoints > 0 ||
window.navigator.msMaxTouchPoints > 0 // pre IE 11
Firefox's legacy DocumentTouchdocT (which is now obsolete), by checking for:
window.DocumentTouch && document instanceof DocumentTouch