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[Amybiubiu]

记一些

• react hooks

  function Counter() {
  let [count, setCount] = useState(0)
  
  useEffect(() => {
  let id = setInterval(() => {
    setCount(count + 1)
  }, 1000)
  return () => clearInterval(id)
  }, [])
  
  return <h1>{count}</h1>
  }
  // https://overreacted.io/zh-hans/making-setinterval-declarative-with-react-hooks/

• 为什么要 http -》 https
• 从输入浏览器到页面呈现。
• flex 布局