<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<input type="text" v-model="data.content" placeholder="输入要添加进list的内容">
<button @click="add">添加</button>
<p>list中的内容如下：</p>
<ul>
<li v-for="(item, index) in data.list" :key="index">
<!-- 从 list 数组中移除从 index 开始的一个元素。 -->
{{ item }}<button @click="remove(index)">删除</button>
</li>
</ul>
<p>当前list的长度为：{{ data.list.length }}</p>
<button @click="clear">清空</button>
</div>
<script type="module">
import { createApp, reactive, ref } from './vue.esm-browser.js'
createApp({
setup() {
const data = reactive({
content: "",
list: ["1", "2","3"],
})
const add = () => {
data.list.push(data.content)
console.log(data.list)
}
const remove = (index) => {
data.list.splice(index, 1)
}
const clear = () => {
data.list = []
}
return {
data,
add,
remove,
clear
}
}
}).mount("#app")
</script>
</body>
</html>
参考
https://www.bilibili.com/video/BV1nV411Q7RX
