model-element-samples/toggle.html at main · immersive-web/model-element-samples · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Model: toggle</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <h1>Model: toggle</h1>
      <hr />
      <p>
        A model is dynamically added or removed from the document when the button is clicked.
      </p>

      <p>
        <button type="button" id="toggle">Add model</button>
      </p>

      <div id="model-slot"></div>
    </div>

    <template id="model-template">
      <model alt="A model of a teapot">
        <source src="./teapot.usdz" type="model/vnd.usdz+zip" />
        <source src="./teapot.glb" type="model/gltf-binary" />
        <img
          src="./teapot-fallback-black.jpg"
          alt="An image of a model of a teapot" />
      </model>
    </template>

    <script type="module">
      const slot = document.getElementById('model-slot');
      const button = document.getElementById('toggle');
      const template = document.getElementById('model-template');

      let modelEl = null;

      const toggleModel = () => {
        if (modelEl) {
          modelEl.remove();
          modelEl = null;
          button.textContent = 'Add model';
        } else {
          slot.innerHTML = template.innerHTML;
          modelEl = slot.querySelector('model');
          button.textContent = 'Remove model';
        }
      };

      button.addEventListener('click', toggleModel);
    </script>
  </body>
</html>