How to introduce cdn into vue

Vue is a popular JavaScript framework that makes it easier for developers to write scalable web applications. When using Vue, we can choose to introduce Vue into our project as a JavaScript file, or introduce Vue from a CDN (Content Delivery Network) service.

So, how to introduce Vue’s CDN? Next, we will introduce in detail the steps to introduce Vue using CDN.

1. Add CDN link in HTML file

First, we need to introduce Vue’s CDN link in HTML file. We can find Vue's CDN link on Vue's official website, as shown below:

<script src="https://cdn.jsdelivr.net/npm/vue"></script>

Add the above link to the head or body part of the HTML file, and place it before the introduction of other necessary files. Can.

2. Create a Vue instance

After introducing Vue’s CDN, we need to create a Vue instance. We can create a Vue instance just like introducing a JS file, as shown below:

<script>
  var app = new Vue({
    el: '#app',
    data: {
      message: 'Hello Vue!'
    }
  })
</script>

After introducing Vue’s CDN, we can use Vue to create a Vue instance. In the above code, we create a Vue instance named app, bind it to the element with the id app in the HTML page, and define an attribute message in the data.

3. Using Vue instances in HTML

Once we have created the Vue instance, we can use Vue to bind data in the HTML file. For example, we can use double curly braces to bind the data of the Vue instance as follows:

<div id="app">
  {{ message }}
</div>

In the above code, we bind the Vue instance app to the element with the id app in the HTML page, and Use double curly braces to bind the data message in the Vue instance.

4. Introducing other vue components CDN

In addition to Vue's own CDN, we can also use CDN to introduce other Vue components and plug-ins, such as Vue-router and Vuex. Before using these components and plug-ins, we need to introduce their CDN links in the HTML file. For example, we can use the following link to introduce the CDN of Vue-router:

<script src="https://cdn.jsdelivr.net/npm/vue-router@3.1.3/dist/vue-router.min.js"></script>

Similarly, we need to add the CDN link of Vue-router in the HTML document and then create a Vue-router instance. We can use the createRouter() method to create a Vue-router instance. For example, the following code uses Vue-router to implement basic routing settings:

<script>
  const router = VueRouter.createRouter({
    routes: [
      { path: '/', component: Home },
      { path: '/about', component: About }
    ]
  })
  const app = Vue.createApp({})
  app.use(router)
  app.mount('#app')
</script>

In the above code, we define two routes through the routes attribute: / and /about. Then, we use the Vue.createApp() method to create a Vue instance, and use the Vue-router plugin and the mount() method to bind the Vue instance to the app element of the HTML page.

Summary

Introducing Vue's CDN is a very simple and fast way that allows us to build Vue applications more conveniently. We only need to add the CDN link in the HTML file, create a Vue instance, and then bind it to the HTML page. In addition, we can also use CDN links to bring in other Vue components and plugins, such as Vue-router and Vuex, to make it easier to build Vue-based applications.

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