Vue. js custom command usage and instance parsing, vue. js Parsing

Vue. js custom command usage and instance parsing, vue. js Parsing

Most of the Articles on Vue. js custom commands on the market talk about syntax and seldom talk about actual application scenarios and use cases. Even if you understand how to write them, you do not know how to use them. This document does not describe the syntax. It describes the usage of custom commands.

Custom commands are used to operate the DOM. Although Vue advocates the concept of data-driven view, not all situations are suitable for data-driven. Custom commands are an effective supplement and extension. They can be used not only to define any DOM operations, but also to reuse them.

For example, Google Images are loaded elegantly. Before the images are loaded, they are rendered directly after they are loaded with a random background color. You can use custom commands to conveniently implement this function.

Effect:

The second use of custom commands is to integrate third-party plug-ins. We know that any software development field can be divided into four layers: The underlying layer is the native API, the upper layer is the general framework, the upper layer is the general components, and the top layer is the specific business code. A general framework must be combined with a complete set of general components to truly lay the foundation for its position.

In the field of front-end development, jQuery, jQuery, and general components built based on jQuery have formed a huge production system. Currently, the common frameworks are Angular, React, and Vue. Each framework needs to build a new component library based on itself. Custom commands are good: the general components of the past, whether pure js or jQuery-based, can be absorbed directly without transformation or reconstruction.

For example, highlight. js is usually used for writing documents. We can encapsulate it as a custom command, so that highlight. js becomes a new feature of Vue.

Effect:

You can use custom commands to integrate a third-party plug-in with Vue. js.

The above is a small series of Vue. the usage of js custom commands and instance parsing hope to help you. If you have any questions, please leave a message and I will reply to you in a timely manner. Thank you very much for your support for the help House website!