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Versions: 271
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Contents
/* global dom */
// test for hrefs that start with # or /# (for angular)
const isInternalLinkRegex = /^\/?#[^/!]/;
/**
* Determines if element is a skip link
* @method isSkipLink
* @memberof axe.commons.dom
* @instance
* @param {Element} element
* @return {Boolean}
*/
dom.isSkipLink = function(element) {
if (!isInternalLinkRegex.test(element.getAttribute('href'))) {
return false;
}
let firstPageLink;
if (typeof axe._cache.get('firstPageLink') !== 'undefined') {
firstPageLink = axe._cache.get('firstPageLink');
} else {
// define a skip link as any anchor element whose href starts with `#...`
// and which precedes the first anchor element whose href doesn't start
// with `#...` (that is, a link to a page)
firstPageLink = axe.utils.querySelectorAll(
axe._tree,
'a:not([href^="#"]):not([href^="/#"]):not([href^="javascript"])'
)[0];
// null will signify no first page link
axe._cache.set('firstPageLink', firstPageLink || null);
}
// if there are no page links then all all links will need to be
// considered as skip links
if (!firstPageLink) {
return true;
}
return (
element.compareDocumentPosition(firstPageLink.actualNode) ===
element.DOCUMENT_POSITION_FOLLOWING
);
};
Version data entries
271 entries across 271 versions & 1 rubygems