[woogley]

ug, that's already a bad check, but if they insist, why not just:

    /mobile/i.test(navigator.userAgent)

[Cthulhu_]

> Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.

Just because the API call and syntax is a bit iffy doesn't mean it's a bad pattern. ES6 will finally have a string .contains method btw (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...)

[masklinn]

I'd add \b around to avoid matching e.g. `Immobile/1.0`, the slow browser.