Vue JS（提供、注入）

<template>
    <h1>parent component</h1>
<div class="wrapper">
    <h1>{{ user }}</h1>
    <input type="text" placeholder="enter username" v-model="user.name">
    <componentd :user="user"/>
</div>
</template>

import {reactive,provide} from "vue";


const user=reactive({
name:"jahongir",
age:30,
})

provide("user", user)

<template>
    <div>
        <div class="child-element">
            <h1>d component</h1>
            <h2>{{ user }}</h2>

        </div>
    </div>
</template>

<script setup>

import {inject} from "vue";

const user=inject("user");

- import {provide} from "vue"; provide imported by vue

- import {reactive} from "vue"; reactive imported by vue

- const user=reactive({name:"jahongir",age:30,}) reactive object created 

- provide("user", user); in this case, first user in the string is optional name and the second value is our object that we should not be changed

- import {inject} from "vue"; inject imported by vue;

- const user=inject("user"); user value from parent component token by veriable with any optional name. 

- for example in the above we would write any names after const but we should give inside of inject provide's first string name "user"

- <h2>{{ user }}</h2> Finally we run it so on