Thursday 18 January 2024

What is the structure of async component factory in Vuejs explain with example? 082

 What is the structure of async component factory in Vuejs explain with example?

Here's a breakdown of the structure of async component factories in Vue.js, along with examples:


  • defineAsyncComponent function: This function creates an async component factory. It accepts a single argument, which is a loading function that returns a Promise resolving to the component definition.

  • Loading function: This function is responsible for asynchronously fetching the component's definition, typically using dynamic imports. It returns a Promise that resolves to the component's options object or a component constructor.

  • Component options object or constructor: This represents the component to be loaded, either as an object containing its options or a constructor function.



import { defineAsyncComponent } from 'vue';

const asyncComponent = defineAsyncComponent(() =>


  1. defineAsyncComponent: Creates a factory for the async component.

  2. Loading function: The arrow function passed as an argument handles the asynchronous loading.

  3. Dynamic import: The import('./MyComponent.vue') statement dynamically imports the component's definition, returning a Promise.

  4. Promise resolution: When the Promise resolves, it provides the component's options object or constructor, allowing Vue to render it.

Additional Notes:

  • The loading function can handle loading states and errors, providing flexibility in managing asynchronous component loading.

  • Async components can be used with <keep-alive> and error boundaries to enhance user experience and robustness.

  • For more complex scenarios, you can create custom async component factories with additional logic or error handling.

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