45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
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// Ported from nanohref 3.1.0 (MIT) — https://github.com/choojs/nanohref
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// Intercept same-origin anchor clicks for client-side navigation.
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import { equal, notEqual } from './assert.js'
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const safeExternalLink = /(noopener|noreferrer) (noopener|noreferrer)/
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const protocolLink = /^[\w-_]+:/
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export default function href (cb, root) {
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notEqual(typeof window, 'undefined', 'nanohref: expected window to exist')
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root = root || window.document
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equal(typeof cb, 'function', 'nanohref: cb should be type function')
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equal(typeof root, 'object', 'nanohref: root should be type object')
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window.addEventListener('click', function (e) {
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if ((e.button && e.button !== 0) ||
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e.ctrlKey || e.metaKey || e.altKey || e.shiftKey ||
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e.defaultPrevented) return
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const anchor = (function traverse (node) {
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if (!node || node === root) return
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if (node.localName !== 'a' || node.href === undefined) {
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return traverse(node.parentNode)
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}
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return node
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})(e.target)
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if (!anchor) return
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if (window.location.protocol !== anchor.protocol ||
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window.location.hostname !== anchor.hostname ||
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window.location.port !== anchor.port ||
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anchor.hasAttribute('data-nanohref-ignore') ||
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anchor.hasAttribute('download') ||
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(anchor.getAttribute('target') === '_blank' &&
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safeExternalLink.test(anchor.getAttribute('rel'))) ||
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protocolLink.test(anchor.getAttribute('href'))) return
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e.preventDefault()
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cb(anchor)
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})
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}
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