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This article is about the usefulness of reactive function, toRef function and ref function in Vue3. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Reactive function

Reactive is used to define responsive data (which can be understood as a substitute for data)

Usage:

Import import {reactive} from 'vue'

Use:

Const state=reactive ({parameter name: parameter value})

Visit: state. Parameter name

Visit: state. Parameter name

ToRef function (just know it)

ToRef: extract a field from responsive data into separate responsive data

Usage:

Import import {toRef} from 'vue'

Use:

Const state=reactive ({num:0}) const num=toRef (state (responsive data), 'num attribute name') num: {value:0} Ref can actually be understood as a data type: {value: value}

Visit: num.value===0

Note:

Html: you don't have to write value when using responsive data in

Value must be written in js

Ref function definition responsive data {value: value} directly define using imported import {ref} from 'vue'setup () {define const num=ref ({aVO1pl BRV 2}) num: {value: {aVl1MAL BRV 2}

Visit: num.value===0

Reactive: suitable for multiple data, ref for single data

Get dom 123scripteimport {ref} from 'vue'setup () {const target=ref (null) return {target} target.value is the corresponding dom} to get the component instance object

Ref is used for native tags to get dom.

Ref is used for component tags to get component instance objects.

The usage is the same as getting dom

123scriptimport {ref} from 'vue'setup () {const target=ref (null) return {target} target.value is the component instance object} Thank you for reading! This is the end of the article on "what is the use of reactive function, toRef function and ref function in Vue3". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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