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【JavaScript】cookieのkeyを指定して値を取得する方法

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以下のような関数を使用してcookieのkeyを引数に渡して実行すると指定したcookieの値を取得できます

function getCookieValue(key: string) {
  const cookies = document.cookie.split(';')
  const foundCookie = cookies.find(
    (cookie) => cookie.split('=')[0].trim() === key.trim()
  )
  if (foundCookie) {
    const cookieValue = decodeURIComponent(foundCookie.split('=')[1])
    return cookieValue
  }
  return ''
}

getCookieValue('sample_cookie')
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