You can install vuex using npm or yarn as below,
npm install vuex --save
(or)
yarn add vuex
In a module system, you must explicitly install Vuex via Vue.use()
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
(OR)
You can also install it using CDN links such as unpkg.cpm which provides NPM-based CDN links. Just include vuex after Vue and it will install itself automatically.
<script src="https://unpkg.com/vue.js"></script>
<script src="https://unpkg.com/vuex.js"></script>
Note: You can use a specific version/tag via URLs like https://unpkg.com/vuex@2.0.0. If you don't mention any version then it will point to latest version.
