javascript - Problem with route transition in vue?

Question

Vue adds a cutscene animation fade-in and fade-out effect to the route. The component fades out when it is removed, but when it is entered, it enters instantly and does not fade in. Between these two steps, the page will become blank. The following is my code, copied from the official website:

<template>
  <p id="app">
    <transition name="fade">
      <router-view></router-view>
    </transition>
  </p>
</template>
.fade-enter-active, .fade-leave-active {
  transition: opacity .3s
}
.fade-enter, .fade-leave-active {
  opacity: 0
}


请问要怎么做才可以在当前组件淡出的同时，将要被插入的组件能淡入。

Answer 1

Set mode to out-in

Answer 2

.fade-enter-active, .fade-leave-active {
  opacity: 1;
  transition: opacity .3s
}
.fade-enter, .fade-leave-active {
  opacity: 0
}

or:

.fade-enter-active, .fade-leave-active {
  opacity: 1;
  transition: opacity .3s
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}

Answer 3

.fade-enter-active, .fade-leave-active {
opacity: 1;
transition: opacity .3s
}
.fade-enter, .fade-leave {
opacity: 0
}