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{"lastUpload":"2020-09-29T11:19:23.704Z","extensionVersion":"v3.4.3"} |
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import React from 'react'; | |
function ExampleApplication() { | |
return ( | |
<> | |
<Header /> | |
<React.StrictMode> | |
<> | |
<ComponentOne /> | |
<ComponentTwo /> |
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<ErrorBoundary> | |
<MyWidget /> | |
</ErrorBoundary> |
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class ErrorBoundary extends React.Component { | |
constructor(props) { | |
super(props); | |
this.state = { hasError: false }; | |
} | |
static getDerivedStateFromError(error) { | |
// Update state so the next render will show the fallback UI. | |
return { hasError: true }; | |
} |
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const App = () => { | |
const [isOn, setOn] = useState(false); | |
return <div style={{overflow: "hidden"}}> | |
<Button onClick={e => {setOn(!isOn)}} > | |
Click me | |
</Button> | |
{ | |
isOn && | |
<Portal> |
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ReactDOM.createPortal(child, container) |
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import { useEffect } from "react"; | |
import { createPortal } from "react-dom"; | |
const Portal = ({children}) => { | |
const mount = document.getElementById("portal-root"); | |
const el = document.createElement("div"); | |
useEffect(() => { | |
mount.appendChild(el); | |
return () => mount.removeChild(el); |
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="utf-8" /> | |
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" /> | |
<meta name="viewport" content="width=device-width, initial-scale=1" /> | |
<meta name="theme-color" content="#000000" /> | |
<meta | |
name="description" | |
content="Web site created using create-react-app" |
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import React from 'react'; | |
import { PropTypes } from 'prop-types'; | |
const User = ({ name,age })=> { | |
return ( | |
<div> | |
<p>User Name: {name}</p> | |
<p>Age: {age}</p> | |
</div> |
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import React from 'react'; | |
import User from './User'; | |
class App extends React.Component { | |
render() { | |
return ( | |
<div> | |
<User name="Roei" age="30" /> | |
</div> |
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