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I’m working on a site where I’ve created a simple CSS3 hover effect, where if a link is hovered, it changes the opacity and looks like a rollover effect. It seems to be working perfectly on all browsers (even older ones, such as Firefox 2). Just wanted some input if this is a problem and I should consider javascript instead? Or is using CSS a good (semantically correct) way of going about a rollover?
Generally, if an effect can be achieved using CSS alone, it’s usually better to use CSS then to use JavaScript to achieve it.
Sure, you can use JavaScript and/or libraries like jQuery, but why? If the browser is capable of doing it natively, not only will it work better, it will look better and smoother.