Introduced in Vue 3.2, v-memo memoizes a sub-tree of the template. If condition dependencies don't change, Vue skips Virtual DOM diffing entirely for dramatic speedup on large tables.
Vue Performance and v-memo
Optimize massive lists and skip Virtual DOM diffing with v-memo.
Key Takeaways: Vue Performance and v-memo
Mastering Vue Performance and v-memo helps you write clean and reliable Vue.js code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
Vue Performance and v-memo Code Example
Vue.js<div v-for="item in list" :key="item.id" v-memo="[item.id === selected]">
<p>{{ item.name }} - Selected: {{ item.id === selected }}</p>
</div>Output
Skips re-rendering list items unless selection state changes
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