Utilizing VueUse Intersection Observer to monitor numerous elements within a single component

Question

Utilizing VueUse Intersection Observer to monitor numerous elements within a single component

I am faced with the challenge of applying an intersection observer from VueUse to multiple elements. Instead of creating separate refs for each element, which has become cumbersome due to having over 10 elements in every component, I have opted to use a directive. However, I also need to create different states because when one element intersects, the 'isVisible' state is set to true and the 'fade-in' class is applied to all elements. My goal is to apply the class only to the specific intersected element. Is there a more efficient way to create a reusable composable so that I can pass options like 'rootMargin' without needing to create a separate ref and state for each element?

<h1 :class="{ 'fade-in': isVisible }" v-intersection-observer="onIntersectionObserver"></h1>
<h2 :class="{ 'fade-in': isVisible }" v-intersection-observer="onIntersectionObserver"></h2>

javascript vue.js vuejs3 nuxt.js nuxt3.js

Answer 1

Answer №1

According to @Estus Flask's comment, the most efficient solution involves creating a component for intersection observer and utilizing <slot>. It is also possible to transmit options as props from the parent component to the child component. Remember to include ref, state, set up the observer, and define props if necessary within the script. Additional information on observer usage can be found at: .

// child component for observer
<template>
  <div ref="observerRef">
    <slot :isVisible="isVisible"/>
  </div>
</template>

// parent component
<Observer v-slot="{ isVisible }" rootMargin="10px">
  // some content
</Observer>

Answer 2

According to @Estus Flask's comment, the most efficient solution involves creating a component for intersection observer and utilizing <slot>. It is also possible to transmit options as props from the parent component to the child component. Remember to include ref, state, set up the observer, and define props if necessary within the script. Additional information on observer usage can be found at: .

// child component for observer
<template>
  <div ref="observerRef">
    <slot :isVisible="isVisible"/>
  </div>
</template>

// parent component
<Observer v-slot="{ isVisible }" rootMargin="10px">
  // some content
</Observer>

Utilizing VueUse Intersection Observer to monitor numerous elements within a single component

Answer №1

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