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Fetching Data in Vue

Common patterns: fetch onMounted, fetch on param watch, and library-assisted caching. This lesson covers practical patterns, syntax, and mistakes to avoid.

Data Fetching Patterns

Common patterns: fetch onMounted, fetch on param watch, and library-assisted caching.

Nuxt and TanStack Query bring stronger conventions for larger apps.

onMounted(load)
watch(() => route.params.id, load)

Mount + param-change loading.

UI States

pending, error, empty, success
  • Handle loading and errors.
  • Keep composables tested.
  • Prefer TypeScript when you can.
  • Measure before optimizing.

Fetching Data in Vue Cheatsheet

Quick reference for patterns covered in this lesson.

Item Example Purpose
onMounted first load Classic
watch param Reuse
composables reuse DRY
cache libraries Scale
SSR Nuxt Framework
prefetch hover UX

Parallel Requests

Use Promise.all and render partial UI when possible.

Common Mistakes

  • Waterfalls of awaits for independent data.
  • No empty states.

Key Takeaways

  • Fetching Data in Vue shows up often in Vue apps.
  • Practice with a demo.
  • Prefer clear APIs.
  • Read official docs for edge cases.

Pro Tip

Extract useUser(id) instead of copying fetch code into every view.

You now understand fetching data in vue. Next, continue with Axios to keep building your Vue skills.