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Minimal React Template Single File
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<body> | |
<div id="root"></div> | |
<script src="https://unpkg.com/react@17.0.0/umd/react.development.js"></script> | |
<script src="https://unpkg.com/react-dom@17.0.0/umd/react-dom.development.js"></script> | |
<!-- Needed for in-browser Babel transformation --> | |
<script src="https://unpkg.com/@babel/standalone@7.12.4/babel.js"></script> | |
<!--script src="https://unpkg.com/prop-types@15.7.2/prop-types.js"></script--> | |
<!-- type here is 'text/babel' so that Babel compiles it in the Browser | |
and embeds it inside the <header><script> section --> | |
<script type="text/babel"> | |
function Counter({defaultValue}) { | |
const [counter, setCounter] = React.useState(defaultValue); | |
const incrementHandler = () => setCounter(counter + 1) | |
const decrementHandler = () => setCounter(counter - 1) | |
const resetHandler = () => setCounter(defaultValue) | |
return ( | |
<> | |
<div>{counter}</div><br /> | |
<button onClick={incrementHandler}>Increment</button><br /> | |
<button onClick={decrementHandler}>Decrement</button><br /> | |
<button onClick={resetHandler}>Reset</button><br /> | |
</> | |
) | |
} | |
const component = <Counter defaultValue = {1} /> | |
ReactDOM.render(component, document.getElementById('root')) | |
</script> | |
</body> |
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