Which modules of the vue framework use closures

Modules that use closures include component systems, calculated properties, listeners, methods, life cycle hooks, etc. Detailed introduction: 1. Component system: In Vue, each component is an independent closure, which has its own scope and life cycle. Variables and functions inside the component cannot directly access external variables and functions unless communicated through props or events; 2. Computed properties are an important feature in Vue, which use closures to implement data caching and calculation. Computed properties are only recalculated when the dependent data changes, and so on.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In the Vue framework, many modules use closures. Here are some common examples:

1. Component system: In Vue, each component is an independent closure with its own scope and life cycle. Variables and functions inside a component cannot directly access external variables and functions unless communicated through props or events.

2. Computed properties: Computed properties (computed properties) are an important feature in Vue, which use closures to implement data caching and calculation. Computed properties are only recalculated when the dependent data changes.

3. Listener: Watchers in Vue also use closures. Listeners can monitor data changes and perform some operations when the data changes. Because the listener has access to the component instance (that is, the closure's internal state), it can access and manipulate other data or perform specific functions.

4. Method: Methods in Vue are also an application of closures. Methods can be defined in the component's methods object and can be accessed from the component instance. Therefore, methods can access and manipulate other data of the component, or call other methods.

5. Life cycle hook: Vue’s life cycle hook function is also an application of closure. In the life cycle hook function, you can access the instance of the component, manipulate the component's data and execute specific functions.

In general, closures play a very important role in the Vue framework, enabling Vue to achieve core features such as data-driven and componentized.

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