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[PReact] Create a Hello World App with Preact

IT知识worldCreate

【[PReact] Create a Hello World App with Preact】宝剑锋从磨砺出，梅花香自苦寒来。这篇文章主要讲述[PReact] Create a Hello World App with Preact相关的知识，希望能为你提供帮助。
By creating a simple ‘ hello world’ example application first in vanilla javascript, and then in Preact without any tools, we’ ll learn what type of problems Preact is solving for us and how is works at a low level. Then we’ ll switch to a Webpack + Babel setup we’ ll cover some fundamental concepts such as, which imports we need, how to create a component, how to use JSX and finally how to render our component into a target element in a web page.
 
index.js

import {h, render} from ‘preact‘; import App from ‘./components/App‘; render(< App /> , document.querySelector(‘main‘));

Here, we must import ‘h‘ even we don‘t use it. It allows preact convert JSX to JS render to the DOM.
 
App.js:
import {h} from ‘preact‘; const App = () => { return ( < div> Hello World!!! < /div> ); }; export default App;

 

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