Vue.js 3 Slots: Top Techniques & Examples 2026

Vue.js 3 slots empower dynamic, reusable components in 2026 apps. This list explores key slot types like default, named, and scoped, with code snippets for mysterious, performant UIs.

Default Slots Basics

Simplest slot passes content directly: <template v-slot:default>. Ideal for wrappers.

  • Zero props overhead
  • Fallback content auto

Named Slots for Flexibility

Use v-slot:name for targeted injection, e.g., header/footer in modals. 2026 perf boost via compile-time optimization.

  • Multiple named slots
  • Dynamic names via vars

Scoped Slots with Data Binding

Pass props from parent: <slot :user='user'>. Powers lists, tables with custom renders.

  • Reactive data passthrough
  • Destructuring in template

Dynamic and Conditional Slots

v-slot:[dynamic] for runtime names; v-if on slots for logic. Essential for dashboards.

  • Computed slot names
  • Async slot rendering

Advanced Teleport with Slots

Combine <Teleport> and slots for overlays. 2026 Vue 3.5 adds suspense support.

  • Portal-like modals
  • Global slot registries

Best Practices 2026

TypeScript slots, provide/inject fallbacks. Avoid deep nesting for tree-shaking.

  • Slot props interfaces
  • Composition API slots

Frequently Asked Questions

Difference Vue 2 vs 3 slots?

Vue 3 uses v-slot directive, explicit scoping for clarity.

How to debug slot content?

Vue DevTools shows slot hierarchy and props.

Scoped slots performance?

Compiled to functions, negligible overhead in 2026 builds.

Slots with fragments?

Yes, multiple root nodes supported natively.

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