5. App.vue file

The App.vue file is the root component of a Vue.js application. It serves as the main container for all other components and defines the base structure of the app. When Vue initializes the application, it mounts this App.vue component to the #app element in the index.html file, typically found in the public folder.

Key Roles of App.vue

  1. Root Component: It acts as the top-level container where other components are nested and rendered.
  2. Application Layout: App.vue typically defines the main layout and structure of the application, such as headers, footers, sidebars, or main content areas.
  3. Router Outlet: If Vue Router is used, App.vue often includes a <router-view> element to display different components based on the route.
  4. Global Styles: Global styles or layouts that affect the whole application are usually defined in App.vue.

Example App.vue file

<template>
  <div id="app">
    <header>
      <h1>My Vue App</h1>
    </header>
    <!-- This is where the router renders components based on the current route -->
    <router-view></router-view>
    <footer>
      <p>&copy; 2024 My Company</p>
    </footer>
  </div>
</template>

<script>
export default {
  name: 'App'
};
</script>

<style>
/* Global styles for the entire app */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

#app {
  text-align: center;
  color: #333;
}
</style>
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Table Of Contents
5. App.vue file
Key Roles of App.vue