vue 浏览器在新tab中点击关闭旧tab页

在Vue中，当在新的标签页中点击关闭旧的标签页时，可以通过监听`beforeunload`事件来实现相应的操作。在`created`生命周期钩子函数中添加以下代码：

created() {
  window.addEventListener('beforeunload', () => {
    // 执行关闭旧标签页的操作
    // ...
  });
}

在这个事件监听函数中，你可以执行一些关闭旧标签页的操作，比如保存数据、清理资源等。请根据你的具体需求来实现相应的逻辑。
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