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Hi GSAPpers! First post in the forum... I code mainly html and css (and some -little- jQuery) and now I'm learning GSAP and "modern" vanilla JS since two week ago. Today I'm testing GSAP combined with Scrollmagic. I'm trying to apply the same scene (a simple TweenMax with a fade in from the bottom) to all the elements of the page with the class "fadeInBottom". I can do it with this jQuery: let controller = new ScrollMagic.Controller(); $('.fadeInBottom').each(function () { // build a tween let fadeInBottom = TweenMax.from($(this), 1, { y: 100, opacity: 0 }); // build a scene let scene = new ScrollMagic.Scene({ triggerElement: this, offset: -200, reverse: false }) .setTween(fadeInBottom) .addTo(controller) }); Now i'm trying to do the same in plain vanilla JS: let controller = new ScrollMagic.Controller(); // FadeInBottom let fadeElem = Array.prototype.slice.call(document.querySelectorAll(".fadeInBottom")); let self = this; fadeElem.forEach(function(self) { // build a tween let fadeInBottom = TweenMax.from(self, 1.5, { y: 100, opacity: 0 }); // build a scene let scene = new ScrollMagic.Scene({ triggerElement: self, offset: -200, reverse: false }) .setTween(fadeInBottom) .addTo(controller) }) But it just doesn't work. And the console says Uncaught ReferenceError: controller is not defined at index.html: ".addTo(controller)" at Array.forEach (<anonymous>) at index.html:861 "fadeElem.forEach(function(self) {" Any help would be appreciated. Thank you!

When targeting a single class in Vanilla JS staggerTo doesn't seem to work correctly, when using a array of classes it works fine. Works fine if using jquery in commented out code. Please advise.