50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
(function() {
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const observeSelector = '.js-onscreen';
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// TODO - will the form ID ever change?
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const observedNodes = document.querySelectorAll(observeSelector);
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let observedCount = 0;
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let observedTotal = !!observeSelector ? observedNodes.length : 0;
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window.addEventListener('DOMContentLoaded', event => {
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// TODO this selector needs to be robuts
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const enquiryForm = document.querySelector('#wpcf7-f1041-o1 > form');
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const intersectionSupport = !!window.IntersectionObserver;
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function updateObservedCount() {
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observedCount++;
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if (observedCount >= observedTotal) {
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document.body.classList.add('observe-done');
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}
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}
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function onScreenHandler(entries) {
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entries.forEach(entry => {
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if (entry.intersectionRatio > 0) {
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entry.target.classList.add('is-showing', 'has-shown');
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} else {
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entry.target.classList.remove('is-showing');
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}
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});
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}
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if (enquiryForm) {
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enquiryForm.action = '__URL__';
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}
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document.body.classList.add('rwavw-custom');
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observedNodes.forEach(el => {
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if (intersectionSupport) {
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const options = {
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rootMargin: '0px',
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threshold: [0, 1],
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};
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const observer = new IntersectionObserver(onScreenHandler, options);
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observer.observe(el);
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el.classList.add('is-observed');
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}
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updateObservedCount();
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});
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});
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})();
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