

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<section id="todaoapp">
<header class="header">
<h1>小张记事本</h1>
<input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务" class="new-todo" />
</header>
<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)"></button>
</div>
</li>
</ul>
</section>
<footer class="footer">
<span class="todo-count" v-if="list.length!=0">
<strong>{{ list.length }}</strong>
item left
</span>
<button v-show="list.length!=0" class="clear-completed" @click="clear">
Clear
</button>
</footer>
</section>
<footer class="info">
</footer>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#todaoapp",
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){
console.log("删除");
console.log(index);
this.list.splice(index,1);
},
clear:function(){
this.list=[];
}
}
})
</script>
</body>
</html>