Page 16 of 21 of the Unsolicited Advice Archives

1. Use IDL attributes to test support

   HTML5 input control types still have a ways to go before every type is supported in every browser. In the meantime, you may still find that you need to feature-test whether a particular type is supported. Do this by checking the value of the type IDL attribute. IDL attributes are

2. Range controls and padding in IE10+

   While working on a video player for a forthcoming book, I noticed a peculiar spacing issue with \ that affected the layout of this player. Internet Explorer does something a little weird that no other browser does: it throws several pixels of padding along the top and bottom

3. Getting to Know Mutation Observers

   'In this article, Tiffany Brown has a look at mutation observers, how they are different from mutation events, and how you can use them in your web applications.'

4. CSS 3D Transforms on Dev.Opera

   Though I am no longer with Opera, I do plan to keep contributing to their Dev.Opera site. As part of the launch of Opera 15 beta for desktop computers, they recently published a piece I wrote about CSS 3D transforms. Have a read, and feel free to ask questions

5. Understanding 3D Transforms

   'In this article we’ll dig in to 3D transforms in detail, looking at the fundamental differences between 3D and 2D transforms, the 3D transforms available, and some demos that show how these work.'

6. How every conversation about race ever on the internet goes

   Someone makes a comment or corny "joke" that is kinda racist and kinda classist, but mostly harmless.^1^ Someone else — sometimes in the group targeted, sometimes not — says "Hey THAT'S RACIST!" Someone else, usually not in the target group (read: "someone not black / Latino / Asian American / Native American, because those

7. Why doesn't my scale3d() / scaleZ() transform work?

   One of the trickier parts of 3D transforms is understanding how the scaleZ() and scale3d() functions work. When applied to an element, they will often appear to have no effect. But then at other times, or in other combinations, they will. Confusing right? So what's going on? Well, it has

8. A look at the Page Visibility API

   You're sitting in your office with your speakers un-muted. Maybe you're making plans for dinner, and decide to check out the web site of that hot new restaurant in the North Trendy neighborhood. Of course, you're not supposed to be making dinner plans while on the clock. So when Busybody

9. WordPress: Adding custom galleries to your theme

   WordPress has a gallery feature that allows you to include a set of images with your posts. The syntax is simple, using what's known as a shortcode. WordPress has an entire API devoted to shortcodes. In WordPress 3.5, it's possible to add a gallery using the gallery short code