title: vue 2 lifecycle - how to stop beforeDestroy?
body: <p>Can I add something to <code>beforeDestroy</code> to prevent destroying the component? ?</p>
  
  <p>Or is there any way to prevent destroying the component ?</p>
  
  <p>my case is that when I change spa page by vue-route, I use watch route first, but I found that doesn't trigger because the component just destroy..</p>