62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
function _gaLt (event) {
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if (typeof ga !== 'function') {
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return
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}
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let el = event.srcElement || event.target
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/* Loop up the DOM tree through parent elements if clicked element is not a link (eg: an image inside a link) */
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while (
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el &&
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(typeof el.tagName === 'undefined' ||
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el.tagName.toLowerCase() != 'a' ||
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!el.href)
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) {
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el = el.parentNode
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}
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if (el && el.href) {
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/* link */
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const link = el.href
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if (link.indexOf(location.host) == -1 && !link.match(/^javascript:/i)) {
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/* external link */
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/* HitCallback function to either open link in either same or new window */
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const hitBack = function (link, target) {
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target ? window.open(link, target) : (window.location.href = link)
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}
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/* Is target set and not _(self|parent|top)? */
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const target =
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el.target && !el.target.match(/^_(self|parent|top)$/i)
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? el.target
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: false
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/* send event with callback */
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ga(
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'send',
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'event',
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'Outgoing Links',
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link,
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document.location.pathname + document.location.search,
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{ hitCallback: hitBack(link, target) }
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)
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/* Prevent standard click */
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event.preventDefault ? event.preventDefault() : (event.returnValue = !1)
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}
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}
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}
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/* Attach the event to all clicks in the document after page has loaded */
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const w = window
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w.addEventListener
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? w.addEventListener(
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'load',
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() => {
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document.body.addEventListener('click', _gaLt, !1)
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},
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!1
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)
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: w.attachEvent &&
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w.attachEvent('onload', () => {
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document.body.attachEvent('onclick', _gaLt)
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})
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