guide d'utilisation useState

1. Présentez

import React, {
    
     useState } from 'react'
  1. utiliser
  const [count, setcount] = useState(0)
  1. Tous les codes implémentent le nombre plus 1
import React, {
    
     useState } from 'react'
export default function Example() {
    
    
  const [count, setcount] = useState(0)
  return (
    <div>
      <p>click me {
    
     count }</p>
      <button onClick={
    
    () => {
    
     setcount(count + 1)}}>+1</button>
    </div>
  )
}

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Origine blog.csdn.net/weixin_45664217/article/details/123218866
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