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Adrian Roselli
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All Posts Tagged: pattern

YouTube and Vimeo Web Component

If you want something done right, post it wrong. In the long history of the innertubes, if you ask for help with code you typically won’t get much of a response. But if you post code and assert it is ideal and perfect and an immutable reflection of your pristine…

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Tags: accessibility, html, JavaScript, pattern

Don’t Disable Form Controls

Just another usability and accessibility pro telling authors not to do the thing they continue to do. It’s Ok to Disable Buttons There are plenty of cases where you want to disable a button until a user takes a conscious action to enable it, such as when launching nuclear missiles.…

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Tags: accessibility, pattern, rant, usability, UX

Embed Slides, YouTube Videos, and More

There are plenty of use cases for embedding third-party content on a site, as well as local content that may not be in HTML. Perhaps you gave a talk and want to share your slides. Sometimes you want to reference a video that exists only on YouTube. Maybe you have…

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Tags: html, pattern, usability, UX

Where to Put Focus When Deleting a Thing

TL;DR: When deleting something you should generally move focus to the prior equivalent control or its grouping container. Why This Is a Thing Plenty of user interfaces let users delete things that are on the screen. It may be an extra address, a calendar item, a message (the same as…

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Tags: accessibility, JavaScript, pattern, usability, UX

Progressively Enhanced HTML Accordion

Does what it says on the tin. Uses <details> and <summary> with a bit of ARIA to create an accordion that works without JavaScript while working better with JavaScript. Mostly. See the Pen Progressively Enhanced HTML Accordion by Adrian Roselli (@aardrian) on CodePen. Visit the standalone version for testing or…

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Tags: accessibility, ARIA, css, html, JavaScript, pattern, print, usability, UX

Under-Engineered Comboboxen?

When I wrote Under-Engineered Text Boxen in 2019 I mentioned <datalist> (WHATWG, MDN) but did not dwell on it. Partly because support was poor at the time. Once Can I Use’s <datalist> entry listed Firefox on Android supporting it in version 110, I got excited and started testing to write…

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Tags: accessibility, css, html, pattern, usability, UX

Be Careful Using ‘Menu’

TL;DR: Be careful when using the word menu. Be certain you have chosen the term that accurately describes the control you want. If this post looks familiar to you, that is because it is essentially a redress of my 2020 post Stop Using ‘Drop-down’. It is not as divergent as…

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Tags: html, pattern, standards

Under-Engineered Multi-Selects

Others in this sorta-series: Under-Engineered Custom Radio Buttons and Checkboxen Under-Engineered Toggles Under-Engineered Toggles Too Under-Engineered Text Boxen Under-Engineered Responsive Tables Under-Engineered Select Menus Under-Engineered Dependency Questions This post is not about <select multiple> nor a bunch of <div>s roled-up into a listbox with aria-multiselectable. Both the APG examples and…

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Tags: accessibility, css, html, pattern, usability, UX

Brief Note on Buttons, Enter, and Space

Keyboard interaction note for just one control from the entire panoply of HTML controls: A native <button> fires on key down when that key is Enter. If you hold down the Enter key, it continues to fire for as long you hold Enter (or something crashes). A native <button> fires…

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Tags: browser, html, pattern, UX

Support for Marking Radio Buttons Required, Invalid

The required set of radio buttons. The white whale to many a developer who is trying their darnedest to ensure they are conveyed accessibly while not also making it sound like every individual radio button must be toggled. 1961 Cadillac Wonderbar dashboard radio by Nicholas Lucien (cropped). CC BY 2.0.…

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Tags: accessibility, ARIA, html, pattern, standards, usability, UX

Accessible Cart Tables?

The online holiday shopping coupled with my need to make a new invoice template got me looking at a common table structure that is harder to expose to screen readers than it seems at first glance. One I first coded in, checks watch, 1997 when I was an ecommerce developer…

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Tags: accessibility, html, pattern, tables

Under-Engineered Dependency Questions

Others in this sorta-series: Under-Engineered Custom Radio Buttons and Checkboxen Under-Engineered Toggles Under-Engineered Toggles Too Under-Engineered Text Boxen Under-Engineered Select Menus A common interface pattern allows users to choose one item from a pre-defined set of choices, while still allowing them to add a custom selection if nothing else fits.…

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Tags: accessibility, css, html, pattern, usability, UX