Error Handling in Vue

Handling Errors

Use try/catch for async flows, UI error states, and app.config.errorHandler for unexpected failures.

onErrorCaptured can isolate errors in a subtree.

app.config.errorHandler = (err, instance, info) => {
  console.error(err, info)
}

Global error hook for logging.

Layers

per-await try/catch, component fallbacks, global logger

• Handle loading and errors.
• Keep composables tested.
• Prefer TypeScript when you can.
• Measure before optimizing.

Error Handling in Vue Cheatsheet

Quick reference for patterns covered in this lesson.

User Messaging

Translate technical failures into actionable UI copy.

Common Mistakes

• Silent catches.
• Only logging without UI.

Key Takeaways

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