How to package specified JS files separately in webpack
Below I will share with you a method of packaging specified JS files separately with webpack. It has a good reference value and I hope it will be helpful to everyone.
Background
Recently received a request, because the back-end IP accessed by the printed front-end package is not sure, and it is necessary to check the IP in the project The configuration file is taken out separately to facilitate IP modification during operation and maintenance deployment. Therefore, you need to use webpack to package the specified files separately.
CommonsChunkPlugin
module.exports = {
entry: {
app: APP_FILE // 入口文件
},
output: {
publicPath: './dist/', //输出目录，index.html寻找资源的地址
path: BUILD_PATH, // 打包目录
filename: '[name].[chunkhash].js', // 输出文件名
chunkFilename: '[name].[chunkhash].js' // commonChunk 输出文件
}
}Digression
{
Let’s talk about publicPath first. There is a point to note here, that is, the path is written as ./dist relative path. If you write an absolute path like /dist/, one drawback is that when nginx does not place the front-end package in the root directory, index.html will fail to access the resource. Therefore, it is recommended to write a relative path, but when using a relative path, there will be a potential problem, that is, if the routing access of the project itself is in HTML5 mode instead of using hash (there is a # sign on the routing), then the project will still be accessed. Deployment failed. Angular and React will have such problems. I have never used Vue, so it should be similar. The solution at this time is to add the base tag in the head of index.html, that is:
<head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"/> <base href="/" rel="external nofollow" > </head>
}
webpack itself is based on modularization, so in most cases Next, we only need one entry file to get it done. For this requirement, an entry file needs to be added to the app in addition to this entry. That is:
entry: {
app: APP_FILE // 入口文件
ip: IP_FILE
},After configuring webpack in this way, the dist file will successfully print app.xxx.js and ip.xxx.js, but the packaged project will still report an error. The solution is: maintain the IP entry The file is unchanged, but treated as a commonChunk. That is, add:
new webpack.optimize.CommonsChunkPlugin({name: 'ip', minChunks: Infinity}),to plugins to ensure that ip.xxx.js is loaded first and avoid errors.
Disadvantages: This packaging has an obvious disadvantage, that is, the packaged files are compressed, making it inconvenient to modify the files twice. (No solution to compression was found)
CopyWebpackPlugin
The final solution is to separate the ip.js file from the modularization of the project, and then in index.html quoted separately. (This was the solution I thought of at the beginning, but it was not the solution I wanted, but I had no choice but to have limited knowledge and did not solve the previous problem).
Solution process:
First introduce CopyWebpackPlugin in webpack, configuration code:
new CopyWebpackPlugin([
{from: './src/config/ip.js', to: 'ip.js'},
])Introduce it separately in index.html script tag, be sure to configure a random suffix, that is:
<script>
document.write("<s"+"cript type='text/javascript' src='./dist/ip.js?"+Math.random().toString(36).substr(2)+"'></scr"+"ipt>");
</script>to prevent ip.js from causing problems due to caching.
The above solves the problem of webpack packaging specified js separately.
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
Related articles:
Detailed explanation of FastClick source code (detailed tutorial)
How to implement table content paging using vue and element-ui
How to use vue to convert timestamps into custom time formats
The above is the detailed content of How to package specified JS files separately in webpack. For more information, please follow other related articles on the PHP Chinese website!
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
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1377
52
VUE3 Getting Started Tutorial: Packaging and Building with Webpack
Jun 15, 2023 pm 06:17 PM
Vue is an excellent JavaScript framework that can help us quickly build interactive and efficient web applications. Vue3 is the latest version of Vue, which introduces many new features and functionality. Webpack is currently one of the most popular JavaScript module packagers and build tools, which can help us manage various resources in our projects. This article will introduce how to use Webpack to package and build Vue3 applications. 1. Install Webpack
What is the difference between vite and webpack
Jan 11, 2023 pm 02:55 PM
Differences: 1. The startup speed of the webpack server is slower than that of Vite; because Vite does not require packaging when starting, there is no need to analyze module dependencies and compile, so the startup speed is very fast. 2. Vite hot update is faster than webpack; in terms of HRM of Vite, when the content of a certain module changes, just let the browser re-request the module. 3. Vite uses esbuild to pre-build dependencies, while webpack is based on node. 4. The ecology of Vite is not as good as webpack, and the loaders and plug-ins are not rich enough.
How to use PHP and webpack for modular development
May 11, 2023 pm 03:52 PM
With the continuous development of web development technology, front-end and back-end separation and modular development have become a widespread trend. PHP is a commonly used back-end language. When doing modular development, we need to use some tools to manage and package modules. Webpack is a very easy-to-use modular packaging tool. This article will introduce how to use PHP and webpack for modular development. 1. What is modular development? Modular development refers to decomposing a program into different independent modules. Each module has its own function.
How does webpack convert es6 to es5 module?
Oct 18, 2022 pm 03:48 PM
Configuration method: 1. Use the import method to put the ES6 code into the packaged js code file; 2. Use the npm tool to install the babel-loader tool, the syntax is "npm install -D babel-loader @babel/core @babel/preset- env"; 3. Create the configuration file ".babelrc" of the babel tool and set the transcoding rules; 4. Configure the packaging rules in the webpack.config.js file.
Use Spring Boot and Webpack to build front-end projects and plug-in systems
Jun 22, 2023 am 09:13 AM
As the complexity of modern web applications continues to increase, building excellent front-end engineering and plug-in systems has become increasingly important. With the popularity of Spring Boot and Webpack, they have become a perfect combination for building front-end projects and plug-in systems. SpringBoot is a Java framework that creates Java applications with minimal configuration requirements. It provides many useful features, such as automatic configuration, so that developers can build and deploy web applications faster and easier. W
What is Webpack? Detailed explanation of how it works?
Oct 13, 2022 pm 07:36 PM
Webpack is a module packaging tool. It creates modules for different dependencies and packages them all into manageable output files. This is especially useful for single-page applications (the de facto standard for web applications today).
What files can vue webpack package?
Dec 20, 2022 pm 07:44 PM
In vue, webpack can package js, css, pictures, json and other files into appropriate formats for browser use; in webpack, js, css, pictures, json and other file types can be used as modules. Various module resources in webpack can be packaged and merged into one or more packages, and during the packaging process, the resources can be processed, such as compressing images, converting scss to css, converting ES6 syntax to ES5, etc., which can be recognized by HTML. file type.
How to install webpack in vue
Jul 25, 2022 pm 03:27 PM
Webpack in vue is installed using the node package manager "npm" or the npm image "cnpm". Webpack is a static module packaging tool for modern JavaScript applications. It is developed based on node.js. It requires node.js component support when using it. It needs to be installed using npm or cnpm. The syntax is "npm install webpack -g" or "cnpm install webpack -g".
