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(function() { function leoMeasureIframeFormSubmitDataLayer() { /** * Author: Md Hasanuzzaman * Email: webhasan24@gmail.com * Linkedin: https://linkedin.com/md-h * Youtube: https://www.youtube.com/@LeoMeasure-nr3pf */ var iframeSelector = 'iframe'; // change this as your iframe selector var iframe = document.querySelector(iframeSelector); var isFormSubmitted = false; var isInsideIframe = false; var isCodeExecuted = false; var iframeHeight; var observer = new MutationObserver(function (_mutationsList, observer) { var currentHeight = iframe.offsetHeight; var iframeHeightChange = Math.abs(((currentHeight - iframeHeight) / iframeHeight) * 100); if (!isFormSubmitted && iframeHeightChange > 40) { observer.disconnect(); isFormSubmitted = true; window.dataLayer = window.dataLayer || []; dataLayer.push({ event: 'iframe_form_submit', form_location: window.location.href, iframe_id: iframe.getAttribute('id'), iframe_class: iframe.getAttribute('class') }); } }); function handleMouseOver(event) { if (event.target.closest(iframeSelector)) { isInsideIframe = true; } else { isInsideIframe = false; } } function handleFormSubmission() { var formInsideIframe = iframe.contentDocument.querySelector('form'); formInsideIframe.addEventListener('submit', function (event) { var formData = {}; var formInputs = formInsideIframe.querySelectorAll('input, select, textarea'); for (var i = 0; i < formInputs.length; i++) { var input = formInputs[i]; if (input.type === 'radio') { if (input.checked) { formData[input.name] = input.value; } } else if (input.type === 'checkbox') { if (!formData[input.name]) { formData[input.name] = []; } if (input.checked) { formData[input.name].push(input.value); } } else { formData[input.name] = input.value; } } window.dataLayer = window.dataLayer || []; window.dataLayer.push({ event: 'iframe_form_submit', form_location: window.location.href, iframe_id: iframe.getAttribute('id'), iframe_class: iframe.getAttribute('class'), user_inputs: formData }); }); } document.addEventListener('mouseover', handleMouseOver); window.addEventListener('blur', function () { if (isInsideIframe && !isCodeExecuted) { isCodeExecuted = true; document.removeEventListener('mouseover', handleMouseOver); window.dataLayer = window.dataLayer || []; dataLayer.push({ event: 'iframe_form_start', form_location: window.location.href, iframe_id: iframe.getAttribute('id'), iframe_class: iframe.getAttribute('class') }); if (iframe.contentDocument) { handleFormSubmission(); } else { iframeHeight = iframe.offsetHeight; observer.observe(iframe, { attributes: true, childList: true, subtree: true }); } } }); } leoMeasureIframeFormSubmitDataLayer(); })()