I added a new route and added an animation to transition to the new route.

I added the following code which will push the new route (/first) when the button is clicked:

/* From the Template */
<router-view @clickedNext1="onClickTransition" v-slot="{ Component }">
    <transition name="route1" mode="out-in">
      <component :is="Component"></component>
    </transition>
  </router-view>

/* From the Script */
 methods: {
    onClickTransition() {
      this.$router.push("/first");
    },

Now the problem is that when I click the button and call the "onClickTransition" method, the router seems to be pushed fine, but the page is empty. The component is rendered only when I refresh the page manually by pressing ctrl R.

I believe the problem may come from the insertion of the animation, but if I refresh the page manually, the animation works just fine. So I don't know what the problem is. I will be very grateful for your help.

This is the rest of the code for app.vue:

<template>
  <router-view @clickedNext1="onClickTransition" v-slot="{ Component }">
    <transition :key="$route.fullPath" name="route1" mode="out-in">
      <component :is="Component" />
    </transition>
  </router-view>
</template>

<script>
export default {
  name: "App",
  components: {},
  data() {
    return {};
  },
  methods: {
    onClickTransition() {
      this.$router.push("/first");
    },
    leave(event) {
      event.preventDefault();
      event.returnValue = "";
    },
  },

  mounted() {
    window.addEventListener("beforeunload", this.leave);
  },

  beforeUnmount() {
    window.removeEventListener("beforeunload", this.leave);
  },
};
</script>
<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #fff;
  background-color: #151515;
  position: relative;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  margin: 0px;
}

/* route transition */
.route1-enter-from {
  opacity: 0;
}
.route1-enter-active {
  transition: all 3s ease-in;
}
.route1-leave-to {
  opacity: 0;
}
.route1-leave-active {
  transition: all 3s ease-in;
}
</style>

Code part in index.js:

import { createRouter, createWebHistory } from "vue-router";
import MainPage from "../views/MainPage.vue";
import FirstScene from "../views/FirstScene.vue";

const routes = [
  {
    path: "/",
    name: "main",
    component: MainPage,
  },
  {
    path: "/first",
    name: "first",
    component: FirstScene,
  },
];

const router = createRouter({
  history: createWebHistory(process.env.BASE_URL),
  routes,
});

export default router;

The "onClickTransition" method comes from the "PreStartPage.vue" component, which is a subcomponent of the main route "MainPage.vue".

Once the "Next" button is clicked in "PreStartPage.vue", it will send an event to "MainPage.vue" using this.$emit."MainPage.vue" and then receive it using a method named The event "onClickNext1", which sends a signal to "App.vue" through another this.$emit. This is the source of the "@clickedNext1" displayed in App.vue.

The following is the code in "PreStartPage.vue":

<script>
export default {
  name: "PreStartPage",
  methods: {
    onClickNext() {
      this.$emit("clickedNext");
    },
  },
};
</script>

This is the code from "MainPage.vue":

<script>
import PreStartPage from "../components/PreStartPage.vue";
export default {
  name: "MainPage",
  components: { PreStartPage },
  data() {
    return { showMain: true, showPre: false };
  },
  methods: {
    toggleMain() {
      this.showMain = !this.showMain;
      this.showPre = !this.showPre;
    },
    onClickNext1() {
      this.$emit("clickedNext1");
    },
  },
};
</script>