Скачать или смотреть next js 13 crash course tutorial 10 loading ui suspense

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certainly! next.js 13 introduced several new features, including improved data fetching mechanisms and the ability to create loading states using react's suspense. this tutorial will guide you through implementing a loading ui with suspense in a next.js 13 application.

what is suspense?

react's suspense is a feature that allows you to "suspend" rendering while waiting for something to load, such as data fetching. this means you can show a fallback ui (like a loading spinner) while the data is being fetched.

setting up next.js 13

before we dive into using suspense, let’s set up a basic next.js 13 application:

1. *create a new next.js application:*



2. *install dependencies:*

you can install any additional dependencies you might need, but for this tutorial, we will stick with the default setup.

implementing loading ui with suspense

now let's create a simple example where we fetch data from an api and display a loading spinner while the data is being fetched.

step 1: create a data fetching component

create a new component called `datafetcher.js` in the `app` directory (assuming you are using the new app directory structure introduced in next.js 13).



step 2: create a loading component

create a loading spinner component that will be displayed while data is being fetched.



step 3: create a page to use the datafetcher

now, let’s create a page that uses the `datafetcher` component. we will wrap it in a `suspense` component to show the loading state.



step 4: run your application

now that everything is set up, you can run your application:



visit `http://localhost:3000` in your browser. you should see "my blog" at the top, and while the posts are being fetched from the api, the "loading..." message will be displayed.

explanation of the code

1. *datafetcher component:*
this component fetches data from a public api and displays a list of posts.
it uses `async/await` syntax for fetching data.

2. *loading component:*
...

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Next.js 13
crash course
tutorial
loading UI
suspense
React
web development
server-side rendering
client-side rendering
code splitting
user experience
asynchronous data
dynamic imports
React features
frontend framework