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react-4.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"
/>
<title>reveal.js</title>
<link rel="stylesheet" href="css/reset.css" />
<link rel="stylesheet" href="css/reveal.css" />
<link rel="stylesheet" href="css/theme/black.css" />
<!-- Theme used for syntax highlighting of code -->
<link rel="stylesheet" href="lib/css/monokai.css" />
<!-- Printing and PDF exports -->
<script>
var link = document.createElement("link");
link.rel = "stylesheet";
link.type = "text/css";
link.href = window.location.search.match(/print-pdf/gi)
? "css/print/pdf.css"
: "css/print/paper.css";
document.getElementsByTagName("head")[0].appendChild(link);
</script>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<h1>Заняття 6</h1>
<p>React</p>
</section>
<section>
<section>
<h3>Higher Order Component</h3>
</section>
<section>
<h4>ХОКа</h4>
<pre><code class="jsx" data-line-numbers data-trim>
function withPreloader(WrappedComponent) {
return class WithPreloader extends React.Component {
render() {
const { isLoading } = this.props;
if (isLoading) return <div>preloader</div>;
return <WrappedComponent {...this.props}></WrappedComponent>;
}
}
}
</code></pre>
</section>
<section>
<h4>Компонент-приклад</h4>
<pre><code class="jsx" data-line-numbers data-trim>
const StuffList = ({ list }) => (
<ul>
{list.map(item => <li key={item.id}>{item.text}</li>)}
</ul>
);
export default withPreloader(StuffList);
</code></pre>
</section>
<section>
<h4>Використання</h4>
<pre><code class="jsx" data-line-numbers data-trim>
<StuffList isLoading={isLoading} />
</code></pre>
</section>
</section>
<section>
<section>
<h3>React Router</h3>
</section>
<section>
<h4>Router</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import React from "react";
import { BrowserRouter } from "react-router-dom";
const App = () => {
return (
<BrowserRouter>
<Routes />
</BrowserRouter>
);
}
</code></pre>
</section>
<section>
<h4>Route, IndexRoute and Switch</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import React from "react";
import { Route, Switch, IndexRoute } from "react-router-dom";
const Routes = () => {
return (
<Switch>
<IndexRoute component={Main} />
<Route path="/auth" exact component={Auth} />
<Route path="/register">
<Register />
</Route>
<Route path="/user/:id" component={User} />
<Route path="/photos">
<Route path="edit/:id" component={PhotoEdit} />
<Route path=":id" component={PhotoView} />
</Route>
<Route path="*" component={NotFound} />
</Switch>
);
}
</code></pre>
</section>
<section>
<h4>Redirect</h4>
<pre><code class="jsx" data-line-numbers data-trim>
<Route exact path="/">
{loggedIn ? <Redirect to="/dashboard" /> : <PublicHomePage />}
</Route>
</code></pre>
</section>
<section>
<h4>Link</h4>
<pre><code class="jsx" data-line-numbers data-trim>
<Link to="/home" />
</code></pre>
</section>
</section>
<section>
<section>
<h3>React Router Hooks</h3>
</section>
<section>
<h4>useHistory</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import { useHistory } from "react-router-dom";
function HomeButton() {
const history = useHistory();
const handleClick = () => history.push("/home");
return (
<button type="button" onClick={handleClick}>
Go home
</button>
);
}
</code></pre>
</section>
<section>
<h4>useLocation</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import { useLocation } from "react-router-dom";
function HomeButton() {
const location = useHistory();
return (
<div>
Path is {location.pathname}
</div>
);
}
</code></pre>
</section>
<section>
<h4>useParams</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import { useParams } from "react-router-dom";
function Post() {
const { id } = useParams();
return (
<div>
This post id is {id}
</div>
);
}
</code></pre>
</section>
<section>
<h4>useRouteMatch</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import { useRouteMatch } from "react-router-dom";
const Post = () => {
const match = useRouteMatch("/post/:id");
// Щось з цим можна робити...
return <div />
}
</code></pre>
</section>
</section>
<section>
<section>
<h3>React.lazy + Suspense</h3>
</section>
<section>
<h4>React.lazy</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import React from 'react'
const MyComponent = React.lazy(() => import('./MyComponent'))
export default MyComponent
</code></pre>
</section>
<section>
<h4>Suspense</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import React, { Suspense } from 'react'
const OtherComponent = React.lazy(() => import('./OtherComponent'))
function MyComponent() {
return (
<div>
<Suspense fallback={<div>Loading...</div>}>
<OtherComponent />
<Suspense>
<div>
)
}
</code></pre>
</section>
<section>
<h4>With React Router</h4>
<pre><code class="jsx" data-line-numbers data-trim>
import React, { Suspense, lazy } from 'react'
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom'
const Home = lazy(() => import('./routes/Home'))
const About = lazy(() => import('./routes/About'))
const App = () => (
<Router>
<Suspense fallback={<div>Loading...</div>}>
<Switch>
<Route exact path="/" component={Home}/>
<Route path="/about" component={About}/>
<Switch>
<Suspense>
<Router>
)
</code></pre>
</section>
</section>
</div>
</div>
<script src="js/reveal.js"></script>
<script>
// More info about config & dependencies:
// - https://github.com/hakimel/reveal.js#configuration
// - https://github.com/hakimel/reveal.js#dependencies
Reveal.initialize({
hash: true,
dependencies: [
{ src: "plugin/markdown/marked.js" },
{ src: "plugin/markdown/markdown.js" },
{ src: "plugin/highlight/highlight.js" },
{ src: "plugin/notes/notes.js", async: true },
],
});
</script>
</body>
</html>