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Spinner Table of Contents Accessibility support ARIA enhancements External ARIA provided by the aria property: ARIAUsagearia-labelDefines a string value that labels the live region. Internal ARIA that is managed by the component: ARIAUsagerole="alert"Provided message is announced. Development considerations Announcing loading messages To provide feedback to screen reader users, it is mandatory to announce the loading state of the spinner. This can be achieved in the following ways: Pre-rendering the component in the DOM. Providing a meaningful loading state message through the aria property, e.g. aria="{ 'aria-label': 'Start/End loading content'}". Common do's and don'ts Do pre-render the spinner when loading feedback must be announced. Do provide a specific loading message through the aria prop. Don't mount the spinner only at the moment loading starts without a label. Integration examples
Spinner mounted only when loading starts❌ Anti-pattern
if (isLoading) {
  container.innerHTML = '<p-spinner></p-spinner>';
}
✅ Recommended
<p-spinner aria="{'aria-label': 'Loading vehicle configuration'}"></p-spinner>
Spinner without loading message❌ Anti-pattern
<p-spinner></p-spinner>
✅ Recommended
<p-spinner aria="{'aria-label': 'Loading vehicle configuration'}"></p-spinner>
Tests Automated TechnologySupportAXE-Core (WCAG 2.2 AA, Best-Practice)✅High-Contrast Mode (light/dark)✅Text-Zoom (200%)✅ Manual TechnologySupportScreen reader (VoiceOver, NVDA)✅
Global settingsColor SchemeAll color tokens use the light-dark() CSS function. Set the theme via the CSS color-scheme property: light for light mode, dark for dark mode, or light dark to follow the user's system preference.LightDarkLight DarkDirectionThe dir global attribute in HTML changes the direction of text and other content within an element. It's most often used on the <html> tag to set the entire page's direction, which is crucial for supporting languages that are written from right to left (RTL), such as Arabic and Hebrew. For example, using <html dir="rtl"> makes the entire page display from right to left, adjusting the layout and text flow accordingly.LTR (left-to-right)RTL (right-to-left)Text ZoomTo ensure accessibility and comply with WCAG 2.2 AA standards, it is mandatory for web content to support text resizing up to at least 200% without loss of content or functionality. Using relative units like rem is a best practice for achieving this, as they allow the text to scale uniformly based on the user's browser settings.100%130%150%200%