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by rocktronica
5122 days ago
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Lazy, sure, but not always a worse experience for the end user. Testing w/ Modernizr _will_ use client resources, and sometimes it's faster, cheaper, and less costly to make assumptions than run those tests. Terrible case in point: "position:fixed". It's not supported in older iOS and IE6, and CSS fallbacks don't work. Testing for it w/ JS is too costly to be worth it, so UA checking is a better compromise. (That is, if it's mandatory to degrade well...) |
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[IE6] http://www.cssplay.co.uk/layouts/fixed.html
(Not that it matters anymore.)