iOS has a :hover problem - Human Who Codes
Posted at July 5, 2012 by Nicholas C. Zakas Tags: CSS, Hover, iOS, Mobile Recently, I got my first iPad. I’ve had an iPhone since last year, and had gotten used to viewing the mobile specific view of most websites. When I got the iPad, it was my first time experiencing desktop webpages using a touch interface. Generally, the transition was easy. I just tapped on links I wanted to navigate to. Alth
The performance of localStorage revisited - Human Who Codes
Posted at April 25, 2012 by Nicholas C. Zakas Tags: JavaScript, localStorage, Performance Now a few weeks removed from a large amount of hand-ringing around the performance of localStorage in browsers, I’ve learned some more about why there was such a concern at Mozilla (which prompted Chris to write his blog post1). The post was met with skepticism because it lacked two key components: numbers an
In defense of localStorage - Human Who Codes
Posted at March 7, 2012 by Nicholas C. Zakas Tags: JavaScript, localStorage, Performance Earlier this week, Chris Heilmann wrote a blog post entitled, There is no simple solution for localStorage1 in which he decried localStorage as slow and encouraged everyone to stop using it. Surprisingly, in a post about performance, there was no mention of what “slow” or “terrible performance” actually meant.
Separating JavaScript download and execution - Human Who Codes
Posted at February 14, 2011 by Nicholas C. Zakas Tags: Feature Detection, JavaScript, Performance Not too long ago, I wrote a post entitled, Thoughts on script loaders1, in which I discussed my thoughts on the continuing introduction of script loaders such as LABjs and ControlJS. In that post I also mentioned what I thought was the main problem that led to existence of these libraries. That probl
Why is getElementsByTagName() faster than querySelectorAll()? - Human Who Codes
Yesterday, fellow Yahoo and SoundManager creator Scott Schiller expressed some confusion on Twitter over why getElementsByTagName("a") is faster than querySelectorAll("a") in nearly all browsers. There a JSPerf test comparing the two and you can that the speed comparison is fairly pronounced. In the browser I’m using right now, Firefox 3.6.8 on Windows XP, querySelectorAll("a") is a shocking 98% s
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The value of HTML validation - Human Who Codes