Fast min/max in arrays
This morning while commuting to the office, reading JavaScript for Web Developers, I bumped into a question: how could I improve a well known algorithm that gets the smallest or the largest number in an array by using built-in Math methods such as Math.min and Math.max. For those not familiar...
WebKit Page Cache
Performance on the web has always been a hot topic to talk about specially when you talk about page load, but you don’t see as often people talking about perceived load which is related to how fast the interface responds to the user interaction, in this area WebKit based browsers...
String searching algorithms in JavaScript engines
I’ve just finished chapter 7: Writing Efficient JavaScript by Nicholas Zakas on Steve Souders’ new book, Even Faster Web Sites, where he presents several string optimization techniques to improve JavaScript performance and wondered which algorithm does String.indexOf method implements on JavaScript engines (aka ECMAScript engines).A few months ago I’ve asked...
CSS color brightness contrast using JavaScript
Dealing with foreground/background color contrast can be a bit tricky specially when you are a not a color-theory savvy or when using CSS color names as listed by Douglas Crockford’s page.The most common problem is when you have to place a label over a color you don’t know on beforehand,...
Cross-browser event listener with design patterns
A lot of the power of JavaScript comes from the ability to be an event-driven language. Dealing with event listeners is not a simple task considering different implementations by Internet Explorer and the rest of the world. After some searching on internet you have probably found some cross-browser solutions, although...
What's going on with Firebug?
UPDATE - july 2nd Since my post yesterday, the firebug developers have released another version of the tool (1.4.0b4) it seems more stable, great job! When Mozilla launched Firefox 3.5 a couple days ago, I was forced to upgrade my FB (firebug) to the new 1.4 beta version, although the...