<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>记事本</title>
</head>
<body>
<!--主体区域-->
<section id="todoapp">
<!--输入框-->
<header class="header">
<h1>记事本</h1>
<input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
class="new-todo"/>
</header>
<!--列表区域-->
<section class="main">
<ul class="todo-list">
<li class="todo" v-for="(item,index) in list">
<div class="view">
<span class="index">{{ index+1 }}.</span>
<label>{{ item }}</label>
<button class="destroy" @click="remove(index)">x</button>
</div>
</li>
</ul>
</section>
<!--统计和清空-->
<footer class="footer">
<span class="todo-count" v-if="list.length!=0"><strong>{{ list.length }}</strong> items left</span>
<button class="clear-completed" @click="clear" v-show="list.length!=0"> Clear</button>
</footer>
</section>
<!--底部-->
<footer class="info">
</footer>
<!--开发版本环境，包含了有帮助的命令行警告-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#todoapp",
data:{
list:["写代码","吃饭饭","睡觉觉"],
inputValue:"好好学习，天天向上"
},
methods:{
add:function(){
this.list.push(this.inputValue);
},
remove:function(index){
this.list.splice(index,1);
},
clear:function(){
this.list = [];
}
}
})
</script>
</body>
</html>
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