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October 8, 2022 06:36
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Track Clicks with Gtag
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Track Clicks</title> | |
| </head> | |
| <body> | |
| <button class="btn-to-track">Click Me!</button> | |
| <a class="link-to-track" href="/cool-stuff">Fake link to cool stuff</a> | |
| <script src="./index.js"></script> | |
| </body> | |
| </html> |
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| const btn = document.querySelector('.btn-to-track') | |
| const link = document.querySelector('.link-to-track') | |
| trackClicks(btn, 'button', 'header-button-awesome') | |
| trackClicks(link, 'link', 'link-to-cool-stuff') | |
| function trackClicks(elem, category, label) { | |
| elem.addEventListener('click', reportToGtag) | |
| function reportToGtag(e) { | |
| e.preventDefault() | |
| if (window.gtag) { // if we have access to gtag | |
| gtag('event', 'click', { | |
| event_category: category, | |
| event_label: label | |
| }) | |
| console.log('reported:', label) | |
| } else { | |
| console.warn('gtag has not been initiated - click not reported') | |
| } | |
| elem.removeEventListener('click', reportToGtag) // only report first click | |
| if (e.ctrlKey && elem.href) { // if ctrl key was held, open link in new tab | |
| window.open(elem.href) | |
| } else { | |
| elem.click() | |
| } | |
| } | |
| } |
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