如何实现点击书签栏书签即可播放音频？现有代码无效如何修复？

原有代码问题说明 #

• 第二段代码中object变量未定义，没有对应的绑定目标，事件绑定逻辑无效
• 第一段代码存在语法错误，有重复嵌套的无效代码段
• 额外绑定点击事件属于冗余逻辑：点击书签本身就是用户主动交互行为，符合浏览器媒体自动播放策略的触发条件，无需额外绑定事件即可直接播放音频

场景1：点击书签立即播放音频 #

直接用这段代码作为书签的URL即可：

javascript:(function(){new Audio('https://media1.vocaroo.com/mp3/12OdDSvf3CkE').play();})();

注意：部分站点如果之前没有任何用户交互行为，可能会触发浏览器自动播放限制，只要你在当前页面点击过任意位置后再点击该书签即可正常播放

场景2：需要保留自定义光标样式，点击书签后修改光标+立即播放音频 #

把修复后的光标样式代码和播放逻辑合并：

javascript:(function(){
  /* 自定义光标样式 */
  var style = document.createElement('style');
  var styleContent = document.createTextNode('* { cursor: 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22 22, auto !important}');
  style.appendChild(styleContent);
  document.head.appendChild(style);
  /* 播放音频 */
  new Audio('https://media1.vocaroo.com/mp3/12OdDSvf3CkE').play();
})();

场景3：点击书签后，点击页面任意位置才播放音频 #

如果确实需要二次点击触发播放，用下面这段代码，绑定事件到document上而非未定义的object：

javascript:(function(){
  document.onclick = function(){
    new Audio('https://media1.vocaroo.com/mp3/12OdDSvf3CkE').play();
    /* 单次播放后可以移除事件，避免重复触发 */
    document.onclick = null;
  };
})();

内容的提问来源于stack exchange，提问作者Bobzilla07