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Versions: 271
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Contents
/* global axe, aria, dom, text */
/**
* Gets the accessible ARIA label text of a given element
* @see http://www.w3.org/WAI/PF/aria/roles#namecalculation
* @method labelVirtual
* @memberof axe.commons.aria
* @instance
* @param {Object} actualNode The virtualNode to test
* @return {Mixed} String of visible text, or `null` if no label is found
*/
aria.labelVirtual = function({ actualNode }) {
let ref, candidate;
if (actualNode.getAttribute('aria-labelledby')) {
// aria-labelledby
ref = dom.idrefs(actualNode, 'aria-labelledby');
candidate = ref
.map(function(thing) {
const vNode = axe.utils.getNodeFromTree(thing);
return vNode ? text.visibleVirtual(vNode, true) : '';
})
.join(' ')
.trim();
if (candidate) {
return candidate;
}
}
// aria-label
candidate = actualNode.getAttribute('aria-label');
if (candidate) {
candidate = text.sanitize(candidate).trim();
if (candidate) {
return candidate;
}
}
return null;
};
/**
* Gets the aria label for a given node
* @method label
* @memberof axe.commons.aria
* @instance
* @param {HTMLElement} node The element to check
* @return {Mixed} String of visible text, or `null` if no label is found
*/
aria.label = function(node) {
node = axe.utils.getNodeFromTree(node);
return aria.labelVirtual(node);
};
Version data entries
271 entries across 271 versions & 1 rubygems