Unlock the Power of Efficient Component Rendering in Vue

When building complex frontend applications, performance bottlenecks can arise when re-rendering components like modals, pop-ups, and buttons in different locations. The traditional approach of passing props isn’t viable for large-scale projects. Fortunately, Vue’s latest version introduces a game-changing solution: Vue Portal.

What is Vue Portal?

Vue Portal enables you to render a component in a different location within your DOM tree, making it an ideal solution for efficient rendering of components like modals and pop-ups.

A Closer Look at Portals

To illustrate how portals work, let’s explore the popular Vue plugin, portal-vue. This plugin creates a portal element in your app, allowing you to render any markup – text, buttons, pop-ups, or modals – within that element in a different DOM node.

Setting Up Portal-Vue

First, install portal-vue in your project like any other plugin:

npm install portal-vue

Then, enable the plugin and create a portal element to wrap the content you want to reuse, such as a user agreement:

import { createApp } from 'vue';
import PortalVue from 'portal-vue';

createApp(App).use(PortalVue).mount('#app');

Reusing Components with Portals

By using portals, you can easily reuse elements like buttons, modals, and popup notifications across your app. Simply wrap the component in a portal element and transport it to wherever it’s needed:

<portal to="modal-container">
  <MyModal>Modal content</MyModal>
</portal>

Portals and HTML

Portals aren’t limited to single-file components. You can also use the target-el prop to display components via an HTML file. For instance, you can create a button with a modal functionality asking users if they want to remove an item or not:

<portal to="button-container" target-el="#remove-button">
  <button>Remove Item</button>
</portal>

Vue 3: The Future of Portals

In Vue 3, portals will become an inbuilt feature, eliminating the need for installation. The basic functionality remains the same, but with a more streamlined approach. Portals will have only one property, target, which renders the content to a DOM element with the same query selector:

import { createApp } from 'vue';

createApp(App).mount('#app');

// In Vue 3
<portal to="#modal-container">
  <MyModal>Modal content</MyModal>
</portal>

The Benefits of Portals

With Vue Portal, you can create reusable elements that are easy to work with. This feature promises to revolutionize the way we build projects, making it easier to debug and maintain complex applications.

• Easier debugging: Portals make it easier to identify and fix issues in your application.
• Better performance: By reusing components, you can reduce the number of unnecessary re-renders, resulting in improved performance.
• Improved maintainability: With portals, you can easily update and maintain complex applications.