O’Reilly Velocity Conference – New York
My favorite front-end conference has always been O'Reilly's Velocity Conference because the conference series has focused on one of the most undervalued parts of client side coding: speed. So often we're so excited that our JavaScript works that we forget that speed, efficiency, and performance are just as important.
The next Velocity event is coming up in New York, October 12-14. The best code speed conference is coming to one of the best cities in the world. Exciting stuff but what's better than an early registration and David Walsh Blog discount?!
20% Discount with 20DWalsh
Registration for Velocity New York is open! Register early for the best price on tickets and reserve your spot to learn all about web performance, DevOps, continuous delivery and more. Use code 20DWALSH to save 20% in addition to best price!
![6 Things You Didn’t Know About Firefox OS]()
Firefox OS is all over the tech news and for good reason: Mozilla's finally given web developers the platform that they need to create apps the way they've been creating them for years -- with CSS, HTML, and JavaScript. Firefox OS has been rapidly improving...
![Page Visibility API]()
One event that's always been lacking within the document is a signal for when the user is looking at a given tab, or another tab. When does the user switch off our site to look at something else? When do they come back?
![Duplicate the jQuery Homepage Tooltips Using MooTools]()
The jQuery homepage has a pretty suave tooltip-like effect as seen below:
Here's how to accomplish this same effect using MooTools.
The XHTML
The above XHTML was taken directly from the jQuery homepage -- no changes.
The CSS
The above CSS has been slightly modified to match the CSS rules already...
![Using Opacity to Show Focus with jQuery]()
A few days back I debuted a sweet article that made use of MooTools JavaScript and opacity to show focus on a specified element. Here's how to accomplish that feat using jQuery.
The jQuery JavaScript
There you have it. Opacity is a very simple but effective...
