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Vue Js How To Call Method From Another Component

Vue.js, one of the most popular JavaScript frameworks, offers a simple and efficient way to build interactive web applications. In this article, we'll dive into a commonly asked question among Vue.js developers: "How to call a method from one component to another in Vue.js."

Imagine you have two Vue components, ComponentA and ComponentB, and you want to trigger a method defined in ComponentB from ComponentA. Fortunately, Vue.js provides a clear and straightforward way to achieve this.

To call a method from one component to another in Vue.js, you can leverage the event bus mechanism. An event bus in Vue acts as a centralized hub that allows components to communicate with each other. Here's how you can implement this in your Vue project:

First, create a new Vue instance to serve as the event bus. You can do this in a separate file or within your main Vue file. Here is an example:

Javascript

// EventBus.js

import Vue from 'vue';
const bus = new Vue();

export default bus;

Now, let's see how to use this event bus to call a method from one component to another:

In ComponentA, where you want to trigger the method in ComponentB, you need to emit an event using the event bus. Here's an example:

Javascript

// ComponentA.vue

import bus from './EventBus';

export default {
  methods: {
    callMethodInComponentB() {
      bus.$emit('callMethodInComponentB');
    }
  }
}

In ComponentB, you need to listen for the event emitted from ComponentA and define the method you want to call. Here's an example:

Javascript

// ComponentB.vue

import bus from './EventBus';

export default {
  created() {
    bus.$on('callMethodInComponentB', this.methodInComponentB);
  },
  methods: {
    methodInComponentB() {
      // Your method logic here
    }
  }
}

By establishing this event bus structure, ComponentA can trigger the 'callMethodInComponentB' event, while ComponentB listens for this event and executes the 'methodInComponentB' method accordingly.

This approach enables seamless communication between Vue components and allows you to call methods from one component to another without tightly coupling them together.

In conclusion, leveraging the event bus mechanism in Vue.js is an effective way to facilitate communication between components and call methods from one component to another. By following the steps outlined in this article, you can enhance the interactivity and functionality of your Vue.js applications.

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