The most important thing to know about the alert role is that it's for content that is dynamically displayed, not for content that appears on page load. If the user is expected to close the alert, then the alertdialog role should be used instead. Dynamic changes that are less urgent should use a less aggressive method, such as including aria-live="polite" or using an other live region role like status. The alert role is of the five live region roles. Warning: Because of its intrusive nature, the alert role must be used sparingly and only in situations where the user's immediate attention is required. As they don't receive focus, focus does not need to be managed and no user interaction should be required. Setting role="alert" is equivalent to setting aria-live="assertive" and aria-atomic="true". The alert role is added to the node containing an alert message, not the element causing the alert to be triggered. The element with the alert role does not have to be able to receive focus, as screen readers (speech or braille) will automatically announce the updated content regardless of where keyboard focus when the role is added. The alert role should only be used for text content, not interactive elements such as links or buttons. The connection to the server was lost so local changes will not be saved.The user's login session is about to expire.An invalid value was entered into a form field.The alert role should only be used for information that requires the user's immediate attention, for example: When this role is added to an element, the browser will send out an accessible alert event to assistive technology products which can then notify the user. It is very basic but let’s me spin up an article in no time, with great flexibility so it serves it’s purpose.The alert role is used to communicate an important and usually time-sensitive message to the user. This blog I keep as a static site (or nearly) without a database articles can be written in Textile or Markdown and it has it’s own repo on Github, so if I mess up, you can file an issue on github and, of course, comment. The theme of this blog is code, development and bit of ops in the different flavours I encounter. This blog was started as the development blog of stuff we discovered working at Médula Diseño and we wanted to share. WSL Ubuntu has no timezone set, making Chrome fail on Intl related methods, when running tests with Karma.
Force a file download from the browser with Blob.Nodejs v10 fsPromises: Let's check if a dir exists, the modern way.Setting up Karma tests for an Angular CLI project.Karma + Jasmine unit testing components in Angular 2+.
This scss code comes with some basic presentation stiles besides the behavioural styles. The other advantage of not using display:none is that it allows us to use css transitions. In the &:hover, &:active, &:focus bit is where the changes in visibility happen, not only on hover, but also on the focus an active states, which do exist on touch devices. The key for this piece of code lies in the overflow:hidden which visibly hides content, but it can be read by screen readers, this is based on the clip techniques recommended by the Yahoo Accessibility Lab NOTE: this block must positiones outside the parent's box to be hidden. Outline:none //since it's obvious there's focus. Overflow: inline-block //it could be display:block
The javascript: inside the href is for avoiding the scroll jumping to the top when you click on the anchor. ?Here lies more explanation to this rather ambiguous question markĪn anchor with a span inside. Here we can see it working on Codepen with it’s two flavours: It also comes with a bit of styling and animation. Is accessible with the keyboard and touch devices, semantic, and screen reader can read it. This one works on IE7+ probably on IE6 too. Yes, yet again revisiting the ubiquitous tooltip snippet. Accesible CSS Tooltip in Compass Screen-reader, legacy, touch and keyboard friendly