52 lines
1.6 KiB
HTML
52 lines
1.6 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<!-- 1. 导入vue.js的脚本文件 -->
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<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
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</head>
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<body>
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<div id="app">
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<!-- 添加数据 -->
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<input type="text" v-model="name">
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<button @click="addUser">添加</button>
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<ul>
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<li v-for="user in userList">姓名:{{user.name}}</li>
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<li v-for="(user, index) in userList" :key="user.id">
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<input type="checkbox" /> 姓名:{{user.name}}
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</li>
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</ul>
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</div>
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</body>
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<script>
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// 将 Vue 对象中的createApp reactive 属性赋值给createApp reactive
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const { createApp, reactive, ref } = Vue; // 解构赋值语法
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// 创建一个 Vue 的应用程序
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createApp({
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// 组合式API 的 setup 用于设置响应式数据和方法
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setup() {
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// 返回数据
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const userList = reactive([
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{ id: 1, name: "Tom" },
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{ id: 2, name: "Jerry" },
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{ id: 3, name: "Maxxie" }
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])
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const name = ref('');
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const nextId = ref(4);
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const addUser = () => {
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userList.unshift({ id: nextId.value, name: name.value })
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name.value = "";
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nextId.value++;
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}
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return {
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userList, addUser, name, nextId
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}
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}
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}).mount('#app') // 将 Vue 应用程序挂载到app元素上
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</script>
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</html>
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