How to use vue function function

Functional functions provided by Vue.js include: $mount: Mount Vue instances into DOM elements; $destroy: destroy Vue instances and free memory; $nextTick: perform operations after DOM updates; $on: listen for custom events; $emit: trigger custom events; $watch: listen for data and trigger callbacks; $set: modify data attributes; $delete: delete data attributes; $refs: contains references to mounted elements; $router (available only when using Vue Router): allows access and manipulation of routes.

Vue function function

Vue.js provides many functional functions to extend the functionality of Vue instances and components. These functions can simplify application development and increase efficiency. Here are some commonly used functional functions and their usage:

1. $mount

The $mount function is used to mount a Vue instance into a DOM element. It returns a Vue instance containing the mounted elements.

2. $destroy

The $destroy function destroys a Vue instance, removes all bound elements from the DOM and frees the associated memory.

3. $nextTick

The $nextTick function returns a Promise that is parsed when the DOM operation of the Vue instance is completed. This is useful for performing operations after DOM updates.

4. $on

$on function listens for a custom event on a Vue instance or component. It accepts two parameters, event name and callback function.

5. $emit

The $emit function triggers a custom event on a Vue instance or component. It accepts two parameters, event name and event data.

6. $watch

The $watch function listens to data in a Vue instance or component and triggers a callback function when the data changes. It accepts two parameters, the data path to be listened to and the callback function.

7. $set

The $set function is used to modify the data of a Vue instance or component. It accepts three parameters, the attribute to be modified, the new value, and the optional forced update flag.

8. $delete

The $delete function is used to delete the data attributes of a Vue instance or component. It accepts two parameters, the attribute to be removed and optionally the forced update flag.

9. $refs

The $refs object contains references to mounted elements. It can be accessed through the ref attribute, allowing direct manipulation of DOM elements.

10. $router

The $router object (available only when using Vue Router) allows access to routing information and operational routing. It contains properties and methods such as currentRoute , push and replace .

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