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Instead of using some library's animate() function, which probably currently uses many badly performing technologies (setTimeout() or top/left positioning, for example) use CSS animations. In many cases, you can actually use CSS Transitionsto get the job done. This works well because the browser is designed … See more Instead of tweaking absolute positioning and fiddling with all that math yourself, use the transform CSS property to adjust the position, scale, and … See more As old-school, accessibility-aware Web developers we love click events since they also support keyboard input. On mobile devices, these are too slow. You should use touchstart and touchend instead. The reason is that these … See more Calls to setInterval()run code at a presumed frame rate that may or may not be possible under current circumstances. It tells the browser to … See more One big performance issue we found in HTML apps was that moving lots of DOMelements around makes everything sluggish — especially when they feature lots of gradients and … See more WebOct 28, 2012 · It uses an MD5 hash of the content itself in the URL, so that the URL remains the same as long as the file is the same, which is really the goal. Calculating the hash is super fast, and it's cached in memory on the server so … pool manners teach alligator
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