Vue.js is a popular front-end framework that can help us write code more efficiently when building web applications. Vue.js has good maintainability and scalability. However, in a production environment, logic changes will occur after Vue.js is packaged, which brings us a lot of trouble. In this article, we will discuss this issue in depth and provide some solutions.
Why does the logic change after Vue.js is packaged?
During the development phase, we can easily write application code for Vue.js. However, in a production environment, we need to package the code and send it to the client. Through this process, Vue.js code is compressed and obfuscated to reduce file size, improve performance and security.
However, during the packaging process, we may encounter some problems. Some Vue.js components and plug-ins will have logical changes after packaging. This is because when packaging, the compiler merges the component and plug-in files of Vue.js into one file and optimizes it. This may cause some features of Vue.js to not work properly, such as dynamic routing, dynamic components, event on, and custom directives.
How to solve the logical changes after Vue.js packaging?
1. Use identifiers to solve the problem of changing component names
After packaging, because the component name is changed, the modules cannot reference each other. It is recommended to use the resolve.alias option of webpack. In webpack Add configuration in .config.js or vue.config.js:
module.exports = { resolve: { alias: { "vue$": "vue/dist/vue.esm.js" } } }
This is a standard solution. Set the $options.name of the component to the file name of the component to solve the change of the component name. question.
2. Use webpack's ProvidePlugin to globalize the required modules
Sometimes we need to call some modules globally. At this time, we need to use webpack's ProvidePlugin to globalize the modules, so that These modules can be used directly in any module. Add the following configuration in webpack.config.js:
const webpack = require("webpack") module.exports = { plugins: [ new webpack.ProvidePlugin({ $: "jquery", jQuery: "jquery", "window.jQuery": "jquery" }) ] }
3. Use vue.config.js for configuration
Add the following configuration in vue.config.js:
module.exports = { runtimeCompiler: true, configureWebpack: { resolve: { alias: { '@components': resolve('src/components'), '@views': resolve('src/views'), } }, externals:{ 'vue': 'Vue', 'element-ui': 'ELEMENT', 'vue-router': 'VueRouter', 'axios': 'axios', 'vuex': 'Vuex' }, } }
This is a typical Vue.js configuration file, which solves the file path problem by configuring resolve.alias.
4. Prevent repeated compilation of components
In Vue.js, when a component is referenced by multiple parent components, each parent component will create a separate instance and compile the component independently. template. This will cause the same components to be compiled repeatedly, and performance will be affected after long runs. By using the cacheDirectory option of vue-loader, components are cached to avoid multiple compilations and improve performance.
module.exports = { chainWebpack: config => { config.module .rule('vue') .use('cache-loader') .loader('cache-loader') .options({ cacheDirectory: path.resolve(__dirname, 'node_modules/.cache/vue-loader'), }) } }
Summary
During the development process of Vue.js, we need to pay attention to the issue of handling logical changes in the production environment. Through webpack configuration, we can solve most of the problems. However, during the development process, we should use the latest version of Vue.js as much as possible, and test the code carefully before packaging to avoid unnecessary trouble.
The above is the detailed content of What to do if the logic changes after vue is packaged. For more information, please follow other related articles on the PHP Chinese website!

The article discusses useEffect in React, a hook for managing side effects like data fetching and DOM manipulation in functional components. It explains usage, common side effects, and cleanup to prevent issues like memory leaks.

Lazy loading delays loading of content until needed, improving web performance and user experience by reducing initial load times and server load.

Higher-order functions in JavaScript enhance code conciseness, reusability, modularity, and performance through abstraction, common patterns, and optimization techniques.

The article discusses currying in JavaScript, a technique transforming multi-argument functions into single-argument function sequences. It explores currying's implementation, benefits like partial application, and practical uses, enhancing code read

The article explains React's reconciliation algorithm, which efficiently updates the DOM by comparing Virtual DOM trees. It discusses performance benefits, optimization techniques, and impacts on user experience.Character count: 159

Article discusses preventing default behavior in event handlers using preventDefault() method, its benefits like enhanced user experience, and potential issues like accessibility concerns.

The article explains useContext in React, which simplifies state management by avoiding prop drilling. It discusses benefits like centralized state and performance improvements through reduced re-renders.

The article discusses the advantages and disadvantages of controlled and uncontrolled components in React, focusing on aspects like predictability, performance, and use cases. It advises on factors to consider when choosing between them.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Linux new version
SublimeText3 Linux latest version

Notepad++7.3.1
Easy-to-use and free code editor

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver CS6
Visual web development tools
