Why does vue need to be packaged?

Vue.js is a popular web front-end framework that uses a componentized architecture in development, which means that it treats the application as a component tree. The way a Vue.js application works is by snapping together all the components, each component is independent and can fit together like building blocks. Loading all the code in the browser at once can be slow for large applications, so Vue.js recommends bundling application code.

Packaging is a process of packaging code and resources together. It builds projects in an optimizable format, smaller file sizes, and component runtime environments. Packaging can make applications run faster and be easier to maintain.

In a Vue.js application, each component has its own template, CSS and JavaScript. These files are scattered in different files. In large applications, these files may be hundreds. If all files are loaded in the browser at once, it will take a long time and may cause the browser to crash. Packaging consolidates all files into one or more files, thereby reducing the number of HTTP requests, making your application load faster and making it easier to maintain.

The packaging tool analyzes the code and packages the minimized static files into smaller codes that support obfuscation and Gzip compression. In this way, the browser can download and parse these files, which include some functions and dependent libraries, and then start rendering web pages and handling user interactions. In the case of lazy loading (Lazy Loading), part of the code of the component is only loaded when needed, instead of loading the entire component at once, thus improving performance.

In addition, packaging can also help reduce the size of the application. It identifies unused code and removes it, reducing the number of bytes that need to be transferred when downloading. This means faster loading times, fewer errors, and a better user experience.

In Vue.js, the most commonly used packaging tool is webpack. Webpack is a modern packaging tool that can package various types of files, such as JavaScript, CSS and HTML, into one or more files. In Vue.js, you can use webpack to easily package your application's code, and use the vue-loader loader to convert Vue components into JavaScript files that can be packaged.

In short, packaging of Vue.js is a must in large applications. It speeds up application loading, reduces the number of HTTP requests, and helps reduce application size. Make your applications run faster by reducing, deleting and compressing files. Therefore, packaging is an important factor to consider in Vue.js, and it can be easily done using packaging tools.

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