国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

Table of Contents
1. Do too much logic in the template
2. Unreasonable abuse of v-if and v-show
3. Data changes are not responsive
4. Over-necked component communication
5. Ignore the correct use of life cycle hooks
Home Web Front-end Front-end Q&A What are some common pitfalls or anti-patterns to avoid when developing Vue applications?

What are some common pitfalls or anti-patterns to avoid when developing Vue applications?

Jun 19, 2025 am 12:36 AM
vue anti-pattern

When developing Vue applications, common anti-patterns include: 1. When dealing with complex logic in the template, the logic should be moved to methods or computed; 2. When abuse of v-if and v-show, the reason should be selected according to the switching frequency; 3. When directly indexing to modify the array or adding object properties to destroy the responsiveness, the mutation method or $set should be used; 4. When excessive nesting causes cumbersome communication of components, state management or provide/inject should be used; 5. When using life cycle hooks incorrectly, attention should be paid to responsibilities at each stage and side effects of cleaning up.

When developing Vue applications, although the framework itself is designed with a relatively friendly and flexible design, it is still easy to get stuck if you do not pay attention to some common problems or misuse methods. Here are some common anti-patterns and practices to avoid that can help you write clearer and maintainable code.


1. Do too much logic in the template

Vue's template syntax is very powerful, but it is also easy for people to "be lazy" to write a lot of logical judgments, calculations and even method calls in the template. This reduces readability and performance.

suggestion:

  • Put complex logic into methods or computed
  • Template only needs to display data, not process data
  • Avoid calling functions in v-for , such as {{ formatData(item) }} , so that each rendering will be executed, affecting performance

For example:

 <!-- Counterexample-->
<div v-for="item in list">
  {{ item.name.split(&#39; &#39;)[0].toUpperCase() }}
</div>

<!-- Correct way-->
<div v-for="item in formattedList">
  {{ item.firstName }}
</div>

Then process the formatting logic in computed .


2. Unreasonable abuse of v-if and v-show

v-if is lazy, and the DOM is not rendered when the condition is false; v-show is displayed hidden through CSS control. Many people will randomly use these two instructions, resulting in unnecessary performance losses or structural confusion.

Recommended usage:

  • If the switching frequency is low (such as the page changes very little after loading), use v-if
  • If you switch frequently, use v-show first
  • Don't abuse v-if on components, especially components with internal state, as repeated destruction and reconstruction will cause state loss

3. Data changes are not responsive

Vue's responsive system relies on the data tracking mechanism. If you directly modify array elements through indexes or add new attributes to objects, these operations will not trigger updates.

Solution:

  • When modifying the array, use the mutation methods provided by Vue (such as push , splice , etc.)
  • Use this.$set() or Vue.set() when adding object properties

example:

 // Error method this.items[index] = newValue;

// The correct way is this.$set(this.items, index, newValue);

4. Over-necked component communication

Passing values ??between parent-child components is the basic ability of Vue, but if the hierarchy is too deep and insists on manually passing props and emit events layer by layer, it will become difficult to maintain.

Optimization direction:

  • Manage global state using Vuex or Pinia
  • For small and medium-sized projects, you can also consider using provide/inject to pass data across levels
  • Combine component logic appropriately to avoid over-split

5. Ignore the correct use of life cycle hooks

Vue's lifecycle hook provides many control points, but some people will do things they shouldn't do in the wrong stage, such as accessing the DOM in created , or initiating an asynchronous request in mounted without processing the load state.

suggestion:

  • created : suitable for initializing data and setting default values
  • mounted : can safely access the DOM, suitable for binding third-party libraries or initiating first requests
  • Be careful to clean up side effects, such as removing event listeners in beforeUnmount or canceling unfinished requests

Basically these common pitfalls. Avoiding them is not complicated, but it is indeed easy to ignore in actual development, especially when catching up with progress. Keep these points in mind, the written Vue code will be more stable and easier to maintain.

The above is the detailed content of What are some common pitfalls or anti-patterns to avoid when developing Vue applications?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to add functions to buttons for vue How to add functions to buttons for vue Apr 08, 2025 am 08:51 AM

You can add a function to the Vue button by binding the button in the HTML template to a method. Define the method and write function logic in the Vue instance.

React vs. Vue: Which Framework Does Netflix Use? React vs. Vue: Which Framework Does Netflix Use? Apr 14, 2025 am 12:19 AM

Netflixusesacustomframeworkcalled"Gibbon"builtonReact,notReactorVuedirectly.1)TeamExperience:Choosebasedonfamiliarity.2)ProjectComplexity:Vueforsimplerprojects,Reactforcomplexones.3)CustomizationNeeds:Reactoffersmoreflexibility.4)Ecosystema

Netflix's Frontend: Examples and Applications of React (or Vue) Netflix's Frontend: Examples and Applications of React (or Vue) Apr 16, 2025 am 12:08 AM

Netflix uses React as its front-end framework. 1) React's componentized development model and strong ecosystem are the main reasons why Netflix chose it. 2) Through componentization, Netflix splits complex interfaces into manageable chunks such as video players, recommendation lists and user comments. 3) React's virtual DOM and component life cycle optimizes rendering efficiency and user interaction management.

How to jump to the div of vue How to jump to the div of vue Apr 08, 2025 am 09:18 AM

There are two ways to jump div elements in Vue: use Vue Router and add router-link component. Add the @click event listener and call this.$router.push() method to jump.

React, Vue, and the Future of Netflix's Frontend React, Vue, and the Future of Netflix's Frontend Apr 12, 2025 am 12:12 AM

Netflix mainly uses React as the front-end framework, supplemented by Vue for specific functions. 1) React's componentization and virtual DOM improve the performance and development efficiency of Netflix applications. 2) Vue is used in Netflix's internal tools and small projects, and its flexibility and ease of use are key.

How to jump a tag to vue How to jump a tag to vue Apr 08, 2025 am 09:24 AM

The methods to implement the jump of a tag in Vue include: using the a tag in the HTML template to specify the href attribute. Use the router-link component of Vue routing. Use this.$router.push() method in JavaScript. Parameters can be passed through the query parameter and routes are configured in the router options for dynamic jumps.

How to implement component jump for vue How to implement component jump for vue Apr 08, 2025 am 09:21 AM

There are the following methods to implement component jump in Vue: use router-link and &lt;router-view&gt; components to perform hyperlink jump, and specify the :to attribute as the target path. Use the &lt;router-view&gt; component directly to display the currently routed rendered components. Use the router.push() and router.replace() methods for programmatic navigation. The former saves history and the latter replaces the current route without leaving records.

How to use vue pagination How to use vue pagination Apr 08, 2025 am 06:45 AM

Pagination is a technology that splits large data sets into small pages to improve performance and user experience. In Vue, you can use the following built-in method to paging: Calculate the total number of pages: totalPages() traversal page number: v-for directive to set the current page: currentPage Get the current page data: currentPageData()

See all articles