How to use Vue to implement progress bar loading effects

How to use Vue to implement progress bar loading effects

Introduction:
In front-end development, progress bar loading effects are a common and practical function that can be used To display the progress of file upload, data loading, page loading and other operations. As a popular JavaScript framework, Vue provides a wealth of tools and components to easily implement progress bar loading effects. This article will introduce how to use Vue to implement a simple progress bar loading effect and provide specific code examples.

1. Overview
The progress bar loading effect generally consists of a progress bar component and an event that triggers loading. In Vue, you can implement a progress bar by defining a global component, and control the display and hiding of the progress bar through methods in the Vue instance.

2. Implementation steps

1. Create a Vue project and install the Vue Router and ProgressBar plug-ins.
2. Introduce the progress bar component and Vue Router into App.vue, and configure the progress bar component as a global component.
3. Define a global front guard in the routing configuration file to control the display and hiding of the progress bar.
4. Define a method in methods for manually controlling the loading progress of the progress bar.
5. Add a button to the page to trigger the loading of the progress bar through a click event.

3. Specific step demonstration

1. Create a Vue project and install the Vue Router and ProgressBar plug-ins.
   Run the following command:

   vue create progress-bar-demo
   cd progress-bar-demo
   npm install vue-router
   npm install vue-progressbar

2. Introduce the progress bar component and Vue Router into App.vue, and configure the progress bar component as a global component.
   Add the following code in App.vue:

   <template>
     <div id="app">
       <!-- ... -->
       <router-view></router-view>
       <vue-progress-bar></vue-progress-bar>
     </div>
   </template>
     
   <script>
   import VueProgressBar from 'vue-progressbar'
     
   export default {
     name: 'App',
     components: {
       VueProgressBar
     },
     // ...
   }
   </script>

3. Define a global front guard in the routing configuration file to control the display and hiding of the progress bar.
   Create a router folder in the src directory, create an index.js file, and add the following code:

   import Vue from 'vue'
   import VueRouter from 'vue-router'
   import VueProgressBar from 'vue-progressbar'
     
   Vue.use(VueRouter)
     
   const progressBarOptions = {
     color: '#29d',
     failedColor: 'red',
     thickness: '3px',
     transition: {
       speed: '0.5s',
       opacity: '0.6s',
       termination: 300
     },
     autoRevert: true,
     location: 'top',
     inverse: false
   }
     
   const router = new VueRouter({
     mode: 'history',
     routes: [
       // ...
     ]
   })
     
   router.beforeEach((to, from, next) => {
     VueProgressBar.start()
     next()
   })
     
   router.afterEach(() => {
     Vue.nextTick(() => {
       VueProgressBar.finish()
     })
   })
     
   export default router

4. Define a method in methods for manual progress control The loading progress of the bar.
   Define a method in any component, such as Home.vue:

   <template>
     <div>
       <h1>Welcome to Home</h1>
       <button @click="startProgress">Start Progress</button>
     </div>
   </template>
     
   <script>
   export default {
     name: 'Home',
     methods: {
       startProgress() {
         VueProgressBar.start()
         // 模拟加载进度
         setTimeout(() => {
           VueProgressBar.finish()
         }, 2000)
       }
     }
   }
   </script>

5. Add a button to the page to trigger the loading of the progress bar through a click event.
   Add a button to any page, such as Home.vue:

   <template>
     <div>
       <h1>Welcome to Home</h1>
       <button @click="startProgress">Start Progress</button>
     </div>
   </template>
     
   <script>
   export default {
     name: 'Home',
     methods: {
       startProgress() {
         VueProgressBar.start()
         // 模拟加载进度
         setTimeout(() => {
           VueProgressBar.finish()
         }, 2000)
       }
     }
   }
   </script>

4. Summary
This article introduces the specific steps on how to use Vue to implement the progress bar loading effect. , and corresponding code examples are provided. Through global components, global front guards, and manual control of the progress bar loading progress, we can easily implement a simple progress bar loading effect. I hope this article can help you implement the progress bar loading special effects in your Vue project, and facilitate you to further expand and optimize in actual development.

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