Snippets

BEM class selectors and the Sass ampersand

The Sass ampersand is incredibly useful in building selectors based on the parent selector, but it has a limitation. Take the following nested BEM-style selectors:

Sass

.component {
  // A BEM modifier.
  &--reversed {
    background: white;
    border-color: lightgray;
 
    // Target a descendent only when the parent has the modifier? Not exactly...
    &__child-element {
      background: rebeccapurple;
    }
  }
}

The linked post explains the problem:

Wait, why is this not working? The problem is that the & has a scope of .component--reversed, so &__child-element compiles to .component--reversed__child-element, which doesn’t [exist] in the markup.

The fix is to save the & to a variable in the parent and use that in the child selector:

Sass

.component {
  // Save the current value of & as $self.
  $self: &;
 
  &--reversed {
    background: white;
    border-color: lightgray;
 
    // Print $self in place of & to get the correct scope of the parent above.
    #{$self}__child-element {
      background: rebeccapurple;
    }
  }
}

The compiled CSS for that element is now .component--reversed .component__child-element[.]

Source link
Using Sass to Control Scope With BEM Naming | CSS-Tricks
Tags
Sass
CSS - BEM

Allow Ctrl- and Shift-clicking links in event handlers

I just recently updated a bunch of my click handlers to not act when the Ctrl or Shift keys are pressed during the click, so that links can be opened in new tabs or windows by the user if so wanted:

JavaScript

// Don't do anything and defer to the default action if a modifier key
// was pressed during the click (to open the link in a new tab, window,
// etc.) - note that this is a truthy check rather than a strict check
// for the existence of and boolean true value of the various event
// properties:
// * https://ambientimpact.com/web/snippets/conditional-statements-and-truthy-values-robust-client-side-javascript
// * https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/ctrlKey
// * https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/shiftKey
if (event.ctrlKey || event.shiftKey) {
  return;
}
Tags
JavaScript
JavaScript - Events
Accessibility
Inclusive

The Accessibility of Styled Form Controls & Friends

A repository of styled and “styled” form control patterns, and how they are announced by screen readers.

Why?

Form controls are necessary in many interfaces, but are often considered annoying, if not downright difficult, to style. Many of the markup patterns presented here can serve as a baseline for building more attractive form controls without having to exclude users who may rely on assistive technology to get things done.

Source link
https://scottaohara.github.io/a11y_styled_form_controls/
Tags
Accessibility
Accessibility - WAI-ARIA
Forms
Forms - Checkboxes
Forms - Radio buttons
Forms - Switches and toggles
Forms - File uploads
Forms - Select boxes
Widgets - Progress bars
Forms - Search

The A11Y Project

Accessibility can be a complex and difficult topic. The Accessibility Project understands this and wants to help make it easier to implement on the web. Our goal is to accomplish this with three principles in mind:

  1. Digestible. We strive to feature short, digestible pieces of content.
  2. Up-to-date. The project is hosted on GitHub so information can be current with the latest standards.
  3. Forgiving. People make mistakes, so we seek to be encouraging.
Source link
https://a11yproject.com/
Tags
Accessibility
Accessibility - WAI-ARIA
References