BBC: outline ARIA landmarks
Developer aid: outlines the ARIA landmark regions on the page and labels each with its role.
Code to copy
// Developer aid: outline ARIA landmarks and label them
(function () {
var roles = ['banner', 'navigation', 'main', 'complementary',
'contentinfo', 'region', 'search'];
roles.forEach(function (role) {
document.querySelectorAll('[role="' + role + '"]').forEach(function (el) {
el.style.outline = '2px dashed #b80000';
el.style.position = el.style.position || 'relative';
var tag = document.createElement('span');
tag.textContent = role;
tag.style.cssText = 'position:absolute;top:0;left:0;z-index:99999;' +
'background:#b80000;color:#fff;font:11px monospace;padding:1px 4px';
el.appendChild(tag);
});
});
})();How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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