Detect mobile browsers

Written byPhuoc Nguyen

#1. Check `userAgent` (not recomended)

// You can add more if you want
const isMobile = /Android|BlackBerry|iPad|iPod|iPhone|webOS/i.test(navigator.userAgent);

I don't recommend this approach because the server can send a fake user agent.

#2. Use feature detection

Check if the browser supports the `pointer:coarse` media query:

const isMobile = function () {
    const match = window.matchMedia('(pointer:coarse)');
    return match && match.matches;
};

We can't rely on the screen size because the mobile devices are getting bigger.

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Phước Nguyễn

Detect mobile browsers

#1. Check `userAgent` (not recomended)

#2. Use feature detection

#See also

Questions? 🙋

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