random_cat/index.html at main · saltand/random_cat · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" href="favicon.ico" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>随机猫</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }

      html,
      body {
        height: 100%;
      }

      body {
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .image {
        cursor: pointer;
        max-width: 100%;
        max-height: 100%;
      }

      .image.hidden,
      .loading.hidden {
        display: none;
      }
    </style>
  </head>
  <body>
    <img id="cat" class="image hidden" alt="随机猫" />
    <div id="loading" class="loading">loading...</div>

    <script>
      const CAT_URL = 'https://thecatapi.com/api/images/get?format=src&type=gif'
      const img = document.getElementById('cat')
      const loading = document.getElementById('loading')

      function setLoading(isLoading) {
        loading.classList.toggle('hidden', !isLoading)
        img.classList.toggle('hidden', isLoading)
      }

      function loadCat() {
        setLoading(true)
        img.src = CAT_URL + '&time=' + Date.now()
      }

      img.addEventListener('load', () => setLoading(false))
      img.addEventListener('click', loadCat)

      loadCat()
    </script>
  </body>
</html>