Originally posted here!
To check if the user's device has a touchscreen using only CSS, you can use the @media
CSS rule and then use the pointer
CSS media feature and set its value as coarse
. If the user's device or the browsing device is a touchscreen, the pointer: coarse
CSS media feature code block will be triggered where you can define the CSS styles to get applied for the touchscreen.
TL;DR
<!-- A simple webpage with a `button` HTML element -->
<html>
<style>
/* Using the `pointer: coarse` CSS media feature to set styles for a touchscreen device */
@media (pointer: coarse) {
button {
background-color: green;
color: white;
}
}
</style>
<body>
<button>Click Me</button>
</body>
</html>
For example, let's say we have a webpage with a button
HTML element like this,
<!-- A simple webpage with a `button` HTML element -->
<html>
<body>
<button>Click Me</button>
</body>
</html>
The webpage looks like this,
The above webpage screenshot is from a desktop device. As you can see that the button has a white background color.
Now let's change the color of the button
HTML element to a green
color when the webpage is opened on a touchscreen device.
To do that first, we can add the @media
CSS media rule with the pointer: coarse
CSS media feature.
It can be done like this,
<!-- A simple webpage with a `button` HTML element -->
<html>
<style>
/* Using the `pointer: coarse` CSS media feature to set styles for a touchscreen device */
@media (pointer: coarse) {
/* Styles for touchscreen devices can be added here */
}
</style>
<body>
<button>Click Me</button>
</body>
</html>
Now to change the color of the button
to green
color, we can use the background-color
CSS property and set its value to green
color inside the pointer: coarse
CSS media feature.
It can be done like this,
<!-- A simple webpage with a `button` HTML element -->
<html>
<style>
/* Using the `pointer: coarse` CSS media feature to set styles for a touchscreen device */
@media (pointer: coarse) {
button {
background-color: green;
color: white;
}
}
</style>
<body>
<button>Click Me</button>
</body>
</html>
The above screenshot is from a mobile touchscreen device. As you can see that the button
background color is changed to green
color which proves that the CSS media feature is working as expected.
With the same media feature, we can write any kinds of functionalities we need for a touchscreen from CSS code only.
See the above code live in codesandbox.
That's all đ.
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