JavaScript:实现点赞与取消 

<body>
    <div class='wrapper'>
      <button class='like-btn'>
        <span class='like-text'>点赞</span>
        <span>👍</span>
      </button>
    </div>
</body>

<script>
  const button = document.querySelector('.like-btn')
  const buttonText = button.querySelector('.like-text')
  let isLiked = false
  button.addEventListener('click', () => {
    isLiked = !isLiked
    if (isLiked) {
      buttonText.innerHTML = '取消'
    } else {
      buttonText.innerHTML = '点赞'
    }
  }, false)

</script>
posted @ 2020-07-26 17:08  珊迪·奇克斯  阅读(852)  评论(0)  编辑  收藏  举报