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GTM Custom JavaScript Variable For Scroll Tracking - non-Interaction logic
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| //Use as a variable in the "Non-interaction Hit" field of the Event Tag | |
| function(){ | |
| nonInteraction = 'Not Set' | |
| //the height of the browser window's viewport | |
| //https://developer.mozilla.org/en-US/docs/Web/API/Window/innerHeight | |
| windowHeight = window.innerHeight | |
| //the height of the document object. In most cases, this is equal to the <body> element of the document | |
| //https://developer.mozilla.org/en-US/docs/Web/API/Document/height | |
| documentHeight = document.documentElement.scrollHeight | |
| heightRatio = documentHeight/windowHeight; | |
| if(heightRatio >= 4 && {{Scroll Depth Threshold}} !== 25){ | |
| //Page Height is "Long" and the user scrolled passed the 25% mark | |
| nonInteraction = false; | |
| } | |
| else if(heightRatio >= 4 && {{Scroll Depth Threshold}} === 25){ | |
| //Page Height is "Long", but only 25% of the page was scrolled | |
| nonInteraction = true; | |
| } | |
| else if(heightRatio >= 2){ | |
| //Page Height is "Medium" | |
| nonInteraction = true; | |
| } | |
| else{ | |
| //Page Height is "Short" | |
| nonInteraction = true; | |
| } | |
| return nonInteraction; | |
| } |
non-Interaction: true, when Page Height is Medium or Short as well as when Scroll Threshold is 25%.
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Use together with:
https://gist.github.com/jsn789/1206bcf53b476cccffb80668a13ae5d0