[JavaScript知识库]reactive函数实现响应式数据

使用reactive函数可以定义对象类型、数组类型的响应式数据。

看个具体的例子。

• 入口文件main.js

import { createApp } from 'vue';
import App from './App.vue';

createApp(App).mount('#app')

• App.vue

<template>
  <h1>个人信息</h1>
  <h2>姓名：{{name}}</h2>
  <h2>年龄：{{age}}</h2>
  <h2>岗位：{{job.position}}</h2>
  <h2>薪酬：{{job.salary}}</h2>
  <h2>爱好：{{hobby}}</h2>
  <button @click="changeInfo">修改个人信息</button>
</template>

<script>
import {ref,reactive} from "vue";

export default {
  name: 'App',
  setup(){
    let name = ref("张三");
    let age = ref(18);
    let job = reactive({
      position:"前端工程师",
      salary:"30k"
    });
    let hobby = reactive(['跑步','游泳','阅读']);

    function changeInfo(){
      name.value = "李四";
      age.value = 28;

      job.position = "Java工程师";
      job.salary = "60k";

      hobby[0] = '吃饭';
      hobby[1] = '睡觉';
      hobby[2] = '打豆豆';
    }

    return {
      name,
      age,
      job,
      hobby,
      changeInfo
    }
  }
}
</script>

• 启动应用，测试效果