Vue.js Suspense

Vue.js 2.6+ introduced a new component called Suspense that helps you manage the state of asynchronous components. The component simplifies the handling of loading states, by allowing you to specify multiple blocks of fallback content based on your component's state.

Syntax

<suspense>
  <template #default>
    <!-- Your asynchronous component content goes here -->
  </template>

  <template #fallback>
    <!-- Your fallback content goes here -->
  </template>
</suspense>

Example

<template>
  <div>
    <suspense>
      <template #default>
        <UserProfile />
      </template>

      <template #fallback>
        <div>Loading User Profile...</div>
      </template>
    </suspense>
  </div>
</template>

Output

The above example will render the UserProfile component if it's loaded successfully. If there is any delay or issue with loading the component, then "Loading User Profile..." will be displayed instead.

Explanation

The Suspense component is used to manage asynchronous components by providing a fallback while the main content is being loaded. Vue.js Suspense also provides the option to have multiple fallback templates which can be used to show different loading states or fallbacks depending on the state of the main component.

The default template is where your main, asynchronous components go, while the fallback template is where you can provide any loading or error messages that need to be displayed.

Use

Use Vue.js Suspense to help manage asynchronous components, and simplify the handling of loading states. With Vue.js Suspense, your application's state and load times are more well-handled, providing a smoother and more reliable user experience.

Important Points

• Vue.js Suspense has a different syntax than typical Vue.js templates, as you are calling two templates as separate blocks inside the component.
• Ensure that all components that are wrapped with Suspense are asynchronous, to get the full benefit of this component.
• You can define multiple fallback templates, and each of them can have unique content to be displayed based on the state of the main asynchronous component.

Summary

Vue.js Suspense is a useful component that helps to handle asynchronous components and provides a fallback while the main content is being loaded. With the ability to specify multiple fallbacks, it is an excellent tool for simplifying the handling of loading states. The syntax is different than typical Vue.js templates but offers an additional layer of functionality and reliability for asynchronous components.