selectors

CSS Selectors are Conditional Statements

.foo {

}

Programmatically, is:

if (element has a class name of "foo") {

}

Descendent selectors are && logic and commas are ||. It just gets more complicated from there, with things like combinators and pseudo selectors. Just look at all the ways styles can cascade.

Jeremy Keith:

If you find you can’t select something in the CSS, that’s a sign that you probably need to add another class name to the HTML. The complexity is confined to the markup in order to keep the CSS more straightforward, modular, and maintainable.

Selectors That Depend on Layout

"Why the heck don't we have ::first-column?"

I heard someone ask that the other day and it's a valid question. I'd even take that question further by asking about ::nth-column() or whatever else relates to CSS columns. We have stuff like ::first-letter and ::first-line. Why not others?

There are many notable things missing from the "nth" crowd. Seven years ago, I wrote "A Call for ::nth-everything" and it included clear use cases like, perhaps, selecting the first two lines of a paragraph.

I don't know all the technical details of it all, but I know there are some fairly decent reasons why we don't have all of these in CSS. Part of it is the difficulty of getting it specced (e.g. words and characters get tricky across written languages) and part of it is the difficulty of implementing them. What I just found out is that there is a FAQ document that explains!

(more…)

“Stop Using CSS Selectors for Non-CSS”

I saw Nicole Dominguez tweet this the other day:

I wasn't at this conference, so I have very little context. Normally, I'd consider it a sin to weigh in on a subject brought up by looking at two out-of-context slides, but I'm only weighing in out of interest and to continue the conversation.

(more…)

inStyle (Modifying the Current Selector `&` in Sass)

The following is a guest post by Filip Naumovic from Salsita Software. Filip has built a Sass tool to help with an issue I know I've experienced many times. You're happily nesting in Sass. You're maybe a level or two deep, and you need to style a variation based on some parent selector. You need to either break out of the nesting and start a new nesting context, or go nuclear with @at-root. I'll let Filip tell the story of his new tool that changes that.

(more…)

Meet the Pseudo Class Selectors

Pseudo class selectors are CSS selectors with a colon preceding them. You are probably very familiar with a few of them. Like hover:

a:hover {
  /* Yep, hover is a pseudo class */
}

They are immensely useful in a variety of situations. Some of them are CSS3, some CSS2... it depends on each particular one. Outside of IE, they have great browser support. In IE land, even IE8, support is pretty barren. However, the IE9 preview has full support of them. The link-related ones work but not much else. Let's take a brief look at each one of them. Don't worry, there isn't that many.

(more…)

icon-anchoricon-closeicon-emailicon-linkicon-logo-staricon-menuicon-nav-guideicon-searchicon-staricon-tag