<script src="https://cdn.jsdelivr.net/npm/vue@2"></script> code example
Example 1: install vue js
npm install -g vue-cli //make sure you have node and npm installed
vue init webpack <appname> // eg: vue init webpack myapp
cd <appname> // cd myapp
npm install
npm run dev //server will start in port 8080
Example 2: vue cdn
<script type="module">
import Vue from 'https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.esm.browser.js'
</script>