The methods for installing Vuex are divided into three types according to the project type: 1. For Vue 2 projects, use npm or yarn to install vuex@3, and introduce and mount the store in main.js; 2. For Vue 3 projects, it is recommended to use Pinia instead, and create and mount the Pinia instance after installation; 3. For simple projects without build tools, Vuex can be introduced through CDN, but it is not recommended to be used in production environments. After selecting the appropriate method, follow the steps to complete the installation and configuration.
Installing Vuex is actually not complicated. The key is to choose the appropriate version and method according to your project type. Vuex is Vue's state management library, suitable for scenarios where large and medium-sized projects require global sharing of data. The following steps are explained in how to install and configure correctly.
Install Vuex using npm (for Vue 2)
If your project is built on Vue 2, you can use the old version of Vuex, which is vuex@3 .
- Open the terminal and enter the root directory of your project
- Run command to install:
npm install vuex@3
Or use yarn:
yarn add vuex@3
After the installation is complete, import and mount the Vuex store in the project's entry file (usually main.js ):
import Vue from 'vue'
import Vuex from 'vuex'
import store from './store'
Vue.use(Vuex)
new Vue({
store,
// ...Other configuration}).$mount('#app')Install Pinia using npm (an alternative to Vuex for Vue 3)
Vue 3 recommends using Pinia instead of Vuex. Pinia is lighter, TypeScript supports better, and has a clearer structure.
The installation method is as follows:
npm install pinia
Then create and mount the Pinia instance in the entry file:
import { createApp } from 'vue'
import { createStore } from 'pinia'
import App from './App.vue'
const app = createApp(App)
const store = createStore()
app.use(store)
app.mount('#app')Quick introduction with CDN (suitable for simple projects or learning)
If you are not using module packaging tools (such as Webpack or Vite), you can directly introduce Vuex via CDN.
Add the following code to the HTML file:
<script src="https://unpkg.com/vue@2"></script>
<script src="https://unpkg.com/vuex@3"></script>
<script>
const store = new Vuex.Store({
state: {
count: 0
},
mutations: {
increment(state) {
state.count
}
}
})
new Vue({
store,
// ...Other configuration}).$mount('#app')
</script>Note: This method is only suitable for small projects or rapid testing and is not recommended for production environments.
Basically that's it. The installation method depends on whether you are using Vue 2 or Vue 3, and whether you use the build tool. Select the right version and follow the steps, there is no big problem.
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