查看“︁Widget:BVTest”︁的源代码

<includeonly>
   <div class="player-container"></div>
    <script>
      /**
       * 根据 AV/BV 号生成 B 站视频 iframe
       * @param {string|number} input - AV号（数字或字符串）或BV号（字符串）
       * @returns {string} iframe HTML 字符串
       */
      function generateBilibiliIframe(input) {
        let idpair = ""
        if (/^av\d+$/i.test(input)) {
          idpair = "aid=" + input.slice(2);
        } else if (/^BV[0-9A-Za-z]+$/.test(input)) {
          idpair = "bvid=" + input;
        } else {
          console.error("输入不合法，必须是 AV 号或 BV 号");
          return "";
        }
          return (
            '<iframe title="BilibiliVideo" src="//player.bilibili.com/player.html?autoplay=false&' + idpair +
            '" scrolling="no" border="0" frameborder="no" framespacing="0" width="100%" height="100%" allowfullscreen="true" sandbox="allow-top-navigation allow-same-origin allow-forms allow-scripts"></iframe>'
          );
      }

      document.querySelector(".player-container").innerHTML =
        generateBilibiliIframe("<!--{$id|escape:'html'}-->");
    </script>
  <style>
    .player-container {
      width: 677px;
      height: 380px;
    }
  </style>
</includeonly>