<template>
  <h1>The 'activated' and 'deactivated' Lifecycle Hooks</h1>
  <p>In this example for the 'activated' and 'deactivated' hooks we also see when and if the 'mounted' and 'unmounted' hooks are run.</p>
  <button @click="this.activeComp = !this.activeComp">Include component</button>
  <div>
    <KeepAlive>
      <comp-one v-if="activeComp"></comp-one>
    </KeepAlive>
  </div>
</template>

<script>
export default {
  data() {
    return {
      activeComp: false
    }
  }
}
</script>

<style scoped>
  div {
    border: dashed black 1px;
    border-radius: 10px;
    padding: 20px;
    margin-top: 10px;
    background-color: lightgreen;
  }
</style>                  

<template>
  <h2>Component</h2>
  <p>Below is a log with every time the 'activated', 'deactivated', 'mounted' or 'unmounted' hooks run.</p>
  <ol ref="olEl"></ol>
  <p>You can also see when these hooks run in the console.</p>
</template>
  
<script>
export default {
  mounted() {
    this.logHook("mounted");
  },
  unmounted() {
    this.logHook("unmounted");
  },
  activated() {
    this.logHook("activated");
  },
  deactivated() {
    this.logHook("deactivated");
  },
  methods: {
    logHook(hookName) {
      console.log(hookName);
      const liEl = document.createElement("li");
      liEl.innerHTML = hookName;
      this.$refs.olEl.appendChild(liEl);
    }
  }
}
</script>

<style>
  li {
    background-color: lightcoral;
    width: 5em;
  }
</style>                  

import { createApp } from 'vue'

import App from './App.vue'
import CompOne from './components/CompOne.vue'

const app = createApp(App)
app.component('comp-one', CompOne)
app.mount('#app')