Black Ducas

Hi @Cassie Thanks for the help. I already saw that codepen but the animation I have to do is completely different. I have these bars (that are separated elements) that should animate changing their height randomly but keeping the oval shapes. My thought brought me to see this animation as animating separately those bars but I really don't know if it makes sense! Any idea? Here is a codepen with the SVG so you can see what I mean: https://codepen.io/gooogooo/pen/ZEXKKGX Thanks

Hi friends I need your help. I need to create an animated waveform, this one: There's some flexibility so the 3 shape can be symmetric respect the axis X (like the 3 red oval I draw on it). The little bars that make up the shapes have the height animated randomly but not too much so we can recognize the oval shapes. (In a step 2: we need to do an animated transition the reduce the amplitude of the shapes). I know I should post a minimal codepen but I really have some hard time to get what's the way to do it. Please, someone that give me an idea? Thanks

Hi, just a variation on this question. Say I've this code and I need to animate the title "Title" <section> <header> <div class="container"> <h1>Title</h1> </div> </header> <div class="container"> Content... </div> </section> Is it more efficient apply the animation on <header> tag or <h1> tag? Consider that the element could be much more nested than that.

@Stefano Monteiro Yes, that was clear. I'd like to know if there's a way to avoid to specify each classes.

Hi @OSUblake I've a code like this: gsap.utils.toArray("" + ".js-class-1, .js-class-1-wrap > *," + ".js-class-2, .js-class-2-wrap > *") // and so on, a long list of classes/css selectors .forEach(el => { gsap.from(el, { scrollTrigger: { trigger: el, once: true, }, y: animUpY, autoAlpha: 0, }); }); and I obviously get in console a lot of "not found" warnings because some classes are on a page, some others on other pages, and so on. What is the best practice in gsap to check them with an if? This technique could decrease performance? (and for this reason is better shutdown warnings in gsap.config?) Also, any advice about a better refactoring of my code is welcome Thanks

@OSUblake You're the one, that's it! 🤙 Well, that was tricky. Below the whole code so that could be helpful for someone. axios.post(ajaxurl, form_data) .then(function (response) { // This keeps the *same* html to inject and animate let template = document.createElement("template"); template.innerHTML = response.data.html; let cards = template.content.querySelectorAll(".card"); // Get elements to animate // Inject HTML in the DOM // Note: DON'T use insertAdjacentHTML to inject, it duplicates html containerEl.append(template.content); // ScrollTrigger animation ScrollTrigger.batch(cards, { onEnter: elements => { gsap.from(elements, { autoAlpha: 0, y: 60, stagger: 0.15 }); }, once: true, }); })

Tried but it's the same

Tried this with no luck (same as before, ScrollTrigger doesn't trigger the animation on new items) axios.post(ajaxurl, form_data) .then(function (response) { // Parse let parser = new DOMParser(); let htmlDoc = parser.parseFromString(response.data.html, 'text/html'); let newItems = htmlDoc.querySelectorAll(".card"); // Inject HTML as string // <li><div class="card">...</div></li> <li><div class="card">...</div></li> ... containerEl.insertAdjacentHTML('beforeend', htmlDoc.body.innerHTML); // ScrollTrigger ScrollTrigger.batch(gsap.utils.toArray(newItems), { onEnter: elements => { gsap.from(elements, { autoAlpha: 0, y: 60, stagger: 0.15 }); }, once: true, }); })

Hi @ZachSaucier and @wpsoul I need to do that same thing you do but with pure Javascript not Jquery. Here's my code but ScrollTrigger doesn't get the new items injected: axios.post(ajaxurl, form_data) .then(function (response) { // Inject HTML from Ajax // <li><div class="card">...</div></li> <li><div class="card">...</div></li> ... containerEl.insertAdjacentHTML('beforeend', response.data.html); let parser = new DOMParser(); let htmlDoc = parser.parseFromString(response.data.html, 'text/html'); let newItems = htmlDoc.querySelectorAll(".card"); ScrollTrigger.batch(gsap.utils.toArray(newItems), { onEnter: elements => { gsap.from(elements, { autoAlpha: 0, y: 60, stagger: 0.15 }); }, once: true, }); }) Any idea? Thanks

@GreenSock Thanks! How can I make it to animates the elements just once? With the following code: scrolling down it animates the cards as expected, then I scroll back to top page and scroll down again and it animates the elements again. I'd like to not animate them again. ScrollTrigger.batch(".cards", { onEnter: elements => { gsap.from(elements, { autoAlpha: 0, y: 60, stagger: 0.15 }); }, });

@OSUblake Hi, no I need a callback that is called after ScrollTrigger.create() is initialized. This is not related to user scrolling or scroll positions. What I'm doing now is using a seTimeout but it's awful and risky setTimeout(function() { // Doing things *after* ScrollTrigger.create() is initialized, considering that it finished in 1 second. This is obviously dirty and not precise }, 1000);

Hi, I'm creating a ScrollTrigger for each cards on my page. I need to do things after the ScrollTrigger has ended to initialize. I can't find a callback (like onComplete) to do this. Any help? cards.forEach(card => { ScrollTrigger.create({ scrollTrigger: { trigger: card.querySelector(".title"), // onEnter: (self) => { ... } // I need something like this: onComplete: function() { console.log("ScrollTrigger initialized"); // Doing things } }, }) })

Hi @Cassie yes it helped. I just asking me: what's the pro of using the whole section as trigger, because now it animates also the elements outside of the viewport. Is it possible to use the single elements as trigger or it makes no sense? It should be better for performance and smooth animation. Let me know your opinion, thanks And, in your opinion, your code is already optimized and performant like LocomotiveScroll parallax or are needed more optimizations?

Hi @Cassie thanks for answer. Yes you're right on this point "I don't quite understand how you're aiming to not animate out of that section though?" The codepen works nice but I'm thinking what's the pro of using the whole section as trigger 🤔, because now it animates also the elements outside of the viewport. Is it possible to use the single elements as trigger? It should be better for performance and smooth animation. Let me know your opinion In general, I'm struggling to understand the logic behind this line: y: (i, el) => (-1 * parseFloat(el.getAttribute("data-speed"))) * postsSection.offsetHeight, Thanks

Hi, I'm really stuck on this simple thing. I just want gsap to change the scrolling speed of elements basing on data-speed attribute. That is, data-speed=1 it has to do nothing, it's normal speed. If 0.5 it's half, if -0.5 it's half but in inverted direction. I started from the demo in the docs, and adapted to my layout, but with this layout it doesn't work anymore. https://codepen.io/gooogooo/pen/yLXbpaM I don't get where I'm wrong. I'm trying also with this other way: gsap.to("[data-speed]", { y: (i, el) => (1 - parseFloat(el.getAttribute("data-speed"))) * ScrollTrigger.maxScroll(window), // y: (i, target) => target.dataset.speed * 500, // y: (i, target) => -ScrollTrigger.maxScroll(window) * target.dataset.speed, ease: "none", scrollTrigger: { trigger: "#featured-posts", scrub: true, markers:true, } }); but again don't work as expected. Hope someone could help me. Thanks