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Table of Contents
Understand what problem is Teleport to solve
Common usage scenarios
Floating components such as pop-up windows, modal boxes, prompt boxes, etc.
Global notification or Toast prompt
Avoid style pollution or layout interference
It's easy to use, but pay attention to details
Home Web Front-end Vue.js When should I use Teleport?

When should I use Teleport?

Jun 25, 2025 am 12:51 AM

Teleport solves the problem of limited rendering locations in Vue 3, avoiding style conflicts and layout interference by moving the DOM to a specified location. 1. It is often used for floating components such as pop-up windows and modal boxes to prevent being cut by the parent or hierarchical confusion; 2. It is suitable for global notifications or Toast prompts, and is mountable to facilitate management of styles; 3. It can reduce the impact of elements such as floating menus on the main layout. When using it, specify the existing target node through the to attribute, and pay attention to maintaining the target consistency between the server and the client.

If you are using Vue 3 and encounter a situation where the components are clear but the rendering position needs to be flexibly adjusted, it is likely that Teleport comes in.

Understand what problem is Teleport to solve

The core function of Teleport is to render a part of the DOM to other places. This sounds a bit weird, but it solves a very common scenario: For example, you write a pop-up component Modal, which is nested deeply in the component structure, but you want its DOM to appear on the outermost layer of the body, or under a specific container.

If Teleport is not used in this case, you will usually encounter problems such as parent-level restrictions (such as overflow:hidden), hierarchy confusion, etc. Teleport allows you to "bounce" out of these restrictions and directly control the position of the DOM insertion.

Common usage scenarios

Floating components such as pop-up windows, modal boxes, prompt boxes, etc.

This is the most typical application scenario of Teleport. When you trigger a pop-up window in a deep component, if the pop-up window is still wrapped in its original position, it is easily affected by the layout of the parent component. For example:

  • Cut by parent element
  • z-index hierarchical conflict
  • Animation performance abnormally

Using Teleport to mount pop-up windows to a body or a fixed positioning container can avoid these problems.

Global notification or Toast prompt

Global prompts like Toast are usually expected to appear at the top of the entire page. At this time, you can also use Teleport to mount them to a top-level node to facilitate unified management of styles and levels.

Avoid style pollution or layout interference

Although some components logically belong to a certain area, they should not affect the current layout structure when rendering. For example, some floating menus and floating buttons can be moved to a position that will not interfere with the main content stream through Teleport, which can reduce the possibility of layout confusion.

It's easy to use, but pay attention to details

Using Teleport in Vue is very simple, you just need to introduce and specify the target location:

 <teleport to="body">
  <div class="modal">This is a pop-up window</div>
</teleport>

Here are a few things to note:

  • to attribute accepts CSS selector strings, such as #app , body , etc., and must be an existing DOM node.
  • The content of the Teleport package is still in the Vue component context, which means that data binding and event delivery work normally.
  • If multiple Teleports are mounted to the same target node, their order depends on the order in the component tree

If your application is deployed in multiple environments (such as SSR), make sure that the mounted target node can be correctly found on both the server and the client, otherwise there may be inconsistent rendering problems.

Basically that's it. Teleport is not a complex feature, but it is very practical when dealing with floating-layer components, especially helping you avoid the pitfalls of "stylized styles".

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