Category Archives: Benchmarks

Speed comparisons I did or found.

CSS gradients are faster than SVG backgrounds

Posted on by Lea Verou

Which is really sad, because SVG is awesome. It lets you do what CSS gradients do and much more, in quite a small filesize, as it’s just text too. However, the browser needs to generate a DOM for every SVG graphic, which results in sluggishness. Here’s my test case Mouse over the 2 divs. They both […]

“Appearances can be deceiving Mr. Anderson” – a.k.a. short code is not always fast code

Posted on by Lea Verou

I used to take pride in my short, bulletproof and elegant String and Number type checks: // Check whether obj is a Number obj + 0 === obj // Check whether obj is a String obj + ” === obj I always thought that apart from being short and elegant, they should be faster. However, […]