What is the vue hook?

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In vue, hook refers to "hook", an event hijacking mechanism that can be executed earlier than events; hooks can be understood as vue built-in events, but this built-in event needs to be actively configured and can be used to handle intercepted function calls, events, and messages.

This article operating environment: windows10 system, Vue2.9.6 version, DELL G3 computer.

What exactly does the vue hook mean?

In fact, the problem is caused by the translation, the original name is "hook" (irresponsibly literally translated as "hook"), it is an event hijacking mechanism, that is, it will be executed earlier than your event.

You can simply think of it as a vue built-in event, but this built-in event is up to you to configure.

The code used to handle such as "intercepted function calls, events, messages" is called hooks

Typical "hook" such as:

The created event is a "hook", and the effect of execution is as follows:

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