Vue Scroll Triggered: Viewport Pinning & Sequence Triggers in Vue 3
Scroll triggered designs require razor-sharp synchronization between the user viewport position and interactive animation states. In Vue 3 web applications, orchestrating entrance reveals and section pinning often breaks down due to hydration mismatch, dynamic container resizing, or fragile sticky CSS rules that fail across different browser engines. ExodeUI solves this architectural problem by providing robust viewport trigger primitives. ExodeUI components monitor viewport geometry with zero layout thrashing and trigger pre-compiled GPU state transitions the exact millisecond an element enters the frame, ensuring consistent, buttery smooth reveals across all devices.
ExodeUI for Vue connects Vue 3 reactive ref and computed primitives directly to GPU uniform registers and state machines, eliminating Virtual DOM recalculation overhead and guaranteeing consistent 120fps motion.
Runnable ExodeUI Vue 3 Code Example
Vue 3 SFC Composition APIImport the ExodeUICanvas component and bind reactive parameters declaratively without imperative DOM lifecycle hooks:
<template>
<div class="trigger-section" ref="sectionRef">
<div class="reveal-card" :class="{ 'is-active': isRevealed }">
<ExodeUICanvas
ref="canvasRef"
src="/scenes/vue-feature-reveal.json"
:inputs="{ 'triggerActive': isRevealed }"
/>
<div class="card-caption">
<h3>Autonomous Motion</h3>
<p>Triggered on 35% viewport threshold.</p>
</div>
</div>
</div>
</template>
<script setup>
import { ref, onMounted, onUnmounted } from 'vue';
import { ExodeUICanvas } from 'exodeui-vue';
const sectionRef = ref(null);
const isRevealed = ref(false);
let observer = null;
onMounted(() => {
observer = new IntersectionObserver(
([entry]) => {
if (entry.isIntersecting) {
isRevealed.value = true;
}
},
{ threshold: 0.35 }
);
if (sectionRef.value) {
observer.observe(sectionRef.value);
}
});
onUnmounted(() => {
if (observer) observer.disconnect();
});
</script>Frequently Asked Questions about vue scroll triggered
What is the recommended threshold for scroll triggers in Vue?
A threshold of 0.2 to 0.35 (20% to 35% viewport visibility) is ideal for marketing features, ensuring the animation begins right as the user eye naturally lands on the component.
Can scroll triggered animations play only once or loop?
Both modes are supported. You can configure one-shot reveals that persist after playing once or reversible triggers that rewind when scrolling back up.
Does ExodeUI scroll triggered handle dynamic page heights?
Yes. ExodeUI dynamically observes element bounding boxes without continuous polling, maintaining trigger accuracy even when accordion items or images expand above.