【vue】ref 和 reactive 对比

• ref：存储单个数据，如数值，字符串
• reactive：存储复杂数据，如对象，数组
  

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="vue.global.js"></script>
</head>

<body>
    <div id="app">
        <!-- 插值表达式 -->
        {{msg}}
        <h2>{{web.title}}</h2>
        <h2>{{web.url}}</h2>
        <h2>{{number}}</h2>
        <h2>{{arr}}</h2>
    </div>

    <script>
        const { createApp, reactive, ref } = Vue

        createApp({
            setup() {
                const number = ref(10)
                const arr = ref([1,2,3,4])//ref也能存数组

                number.value=20 //修改number的值

                const web = reactive({
                    title: "tao355667",
                    url: "tao355667.com"
                })

                return {
                    msg: "success",
                    web,
                    number,
                    arr
                }
            }
        }).mount("#app")
    </script>
</body>

</html>

参考

https://www.bilibili.com/video/BV1nV411Q7RX