mirror of https://github.com/msberends/AMR.git
34 lines
1004 B
JavaScript
34 lines
1004 B
JavaScript
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// Anchor sections v1.0 written by Atsushi Yasumoto on Oct 3rd, 2020.
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document.addEventListener('DOMContentLoaded', function() {
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// Do nothing if AnchorJS is used
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if (typeof window.anchors === 'object' && anchors.hasOwnProperty('hasAnchorJSLink')) {
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return;
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}
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const h = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
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// Do nothing if sections are already anchored
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if (Array.from(h).some(x => x.classList.contains('hasAnchor'))) {
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return null;
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}
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// Use section id when pandoc runs with --section-divs
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const section_id = function(x) {
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return ((x.classList.contains('section') || (x.tagName === 'SECTION'))
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? x.id : '');
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};
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// Add anchors
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h.forEach(function(x) {
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const id = x.id || section_id(x.parentElement);
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if (id === '') {
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return null;
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}
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let anchor = document.createElement('a');
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anchor.href = '#' + id;
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anchor.classList = ['anchor-section'];
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x.classList.add('hasAnchor');
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x.appendChild(anchor);
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});
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});
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