You could use a dedicated state management system such as Vuex, which can help to simplify the process of emitting from deeply nested components. I'd certainly recommend this route and we'll be definitely look to cover this in a future post! Or you could use something known as a Global Event Bus.
We won't go into the reasons for this any further here, but it's certainly worth researching further if this is something you are considering in your app. this.$emit dispatches an event to its parent component. this.$parent gives you a reference to the parent component.
this.$root gives you a reference to the root component.
this.$parent.$emit will make the parent dispatch the event to its parent.
Generally, you use $emit() to notify the parent component that something changed.
For example, suppose you have a component input-name that takes a prop called name.
The way to do this is for input-name to $emit() an event called 'update' when the user clicks the 'Update' button, with the new name.
Vue School has some of our favorite Vue video courses.
Their Vue.js Master Class walks you through building a real world application, and does a great job of teaching you how to integrate Vue with Firebase. While It is strongly advised that you record all events emitted by each of your components. Vue $emit is a function that lets us emit, or send, custom events from a child component to its parent. because it is used to notify the parent component that something changed, It facilitates communication not only between the child and parent components, but also between sibling components who are separated., and it is the best way to trigger certain events.
But in this article, I'm going to explain what Vue Emit is and we'll explore how to use the vue $emit() function to handle custom emitted events, with a code example as well.
This article assumes you have a basic understanding of Vue JS. But you don't need any prior experience handling custom emitted events as this tutorial will give you an in-depth explanation of what Vue $emit function is and how to handle custom emitted events.
After that, navigate to the project in your terminal and start the Vue development server as follows:.