How Can I Detect Touchscreens Using CSS and JavaScript?

Detecting Touchscreens with Media Queries

In the realm of responsive web design, it's essential to adapt content to different input devices. Determining whether a device is a touchscreen can enhance the user experience with appropriate adjustments.

Media Query Solution

The CSS4 media query draft provides a feature specifically for this purpose: 'pointer'. It offers three values:

• none: No pointing device
• coarse: Low-accuracy pointing device
• fine: Accurate pointing device

Usage:

@media (pointer:coarse) {
    /* Adjust styles for low-accuracy pointing devices */
}

Compatibility:

As of January 22, 2013, browser compatibility is as follows:

• Chrome/Win: Supported
• Chrome/iOS: Not supported
• Safari/iOS6: Not supported

JavaScript Alternatives:

While the 'pointer' media query is limited in browser support, JavaScript solutions offer alternatives:

• !window.Touch: Detects touch input
• Modernizr: A library that provides a wide range of device capabilities, including touchscreen detection

Conclusion:

Using the 'pointer' media query when available is the most precise method for detecting touchscreens. However, for devices without support, JavaScript solutions like !window.Touch can be employed effectively.

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