Vue.js
March 18, 2026•1 min read•...
Vue.jsMarch 18, 2026•1 min read•

Vue.js Performance Optimization: Advanced Guide

Advanced performance optimization techniques for Vue.js applications.

Vue.js Performance Optimization: Advanced Guide

Performance is crucial for user experience. Let’s explore advanced optimization techniques for Vue.js.

Virtual Scrolling

For large lists, use virtual scrolling:

vue 
<script setup>
import { useVirtualList } from '@vueuse/core'

const { list, containerProps, wrapperProps } = useVirtualList(
  largeArray,
  { itemHeight: 50 }
)
</script>

Lazy Loading Components

js 
const HeavyComponent = defineAsyncComponent(() =>
  import('./HeavyComponent.vue')
)

v-once for Static Content

vue 
<template>
  <div v-once>
    <h1>{{ staticTitle }}</h1>
    <ComplexStaticTree />
  </div>
</template>

v-memo for Expensive Updates

vue 
<template>
  <div v-memo="[item.id, item.selected]">
    <ExpensiveComponent :item="item" />
  </div>
</template>

Computed vs Methods

Always prefer computed for derived values:

js 
// Good - cached
const filteredList = computed(() => 
  list.value.filter(item => item.active)
)

// Bad - recalculates every render
function getFilteredList() {
  return list.value.filter(item => item.active)
}

Key Takeaways

  1. Profile before optimizing
  2. Use Vue Devtools performance tab
  3. Lazy load routes and components
  4. Avoid unnecessary reactivity

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