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@@ -2,6 +2,7 @@ import {svg} from '../svg.js'; |
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const headingSelector = '.markup h1, .markup h2, .markup h3, .markup h4, .markup h5, .markup h6'; |
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// scroll to anchor while respecting the `user-content` prefix that exists on the target |
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function scrollToAnchor(hash, initial) { |
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// abort if the browser has already scrolled to another anchor during page load |
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if (initial && document.querySelector(':target')) return; |
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@@ -19,6 +20,7 @@ function scrollToAnchor(hash, initial) { |
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export function initMarkupAnchors() { |
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if (!document.querySelector('.markup')) return; |
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// create link icons for markup headings, the resulting link href will remove `user-content-` |
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for (const heading of document.querySelectorAll(headingSelector)) { |
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const originalId = heading.id.replace(/^user-content-/, ''); |
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const a = document.createElement('a'); |
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@@ -31,5 +33,18 @@ export function initMarkupAnchors() { |
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heading.prepend(a); |
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} |
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// handle user-defined `name` anchors like `[Link](#link)` linking to `<a name="link"></a>Link` |
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for (const a of document.querySelectorAll('.markup a[href^="#"]')) { |
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const href = a.getAttribute('href'); |
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if (!href.startsWith('#user-content-')) continue; |
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const originalId = href.replace(/^#user-content-/, ''); |
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a.setAttribute('href', `#${encodeURIComponent(originalId)}`); |
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if (document.getElementsByName(originalId).length !== 1) { |
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a.addEventListener('click', (e) => { |
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scrollToAnchor(e.currentTarget.getAttribute('href'), false); |
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}); |
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} |
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} |
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scrollToAnchor(window.location.hash, true); |
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} |