How to introduce functions globally by vue

Vue provides two methods to introduce functions globally: in main.js, use Vue.prototype to add functions to the prototype of Vue instances; and use the Vuex state management library to store functions in global storage.

How to introduce functions globally in Vue

Vue provides an easy way to bring functions globally into a project so that they can be used in any component. The following are two common methods:

Method 1: Introduce in main.js

Step 1: Create a function in the main.js file of the project:

 <code class="js">const myFunction = () => { // 函数逻辑}</code>

Step 2: In main.js , use Vue.prototype to add the function to the prototype of the Vue instance:

 <code class="js">Vue.prototype.$myFunction = myFunction</code>

Now, the function can be accessed using this.$myFunction in any component.

Method 2: Use Vuex

Vuex is a state management library for Vue. It provides a global storage that can store functions.

Step 1: Create a Vuex module that contains your functions:

 <code class="js">const functions = { state: {}, mutations: {}, actions: { myFunction() { // 函数逻辑} } }</code>

Step 2: Register the module into Vuex storage:

 <code class="js">import Vuex from 'vuex' import functions from './functions' const store = new Vuex.Store({ modules: { functions } })</code>

This function can now be triggered in any component using this.$store.dispatch('functions/myFunction') .

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