Vue小项目01——标签记录器

Vue小项目——标签记录器

功能：用户在文本框里输入文本，按回车键，文本添加到信息栏里，并清空文本框里的内容，最左侧有信息编号，下方有所以信息条数，每条信息右测有删除叉，最下方有全部清空按钮，当信息全部清空，最下方一栏将隐藏。

<!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>Document</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js" integrity="sha384-t1tHLsbM7bYMJCXlhr0//00jSs7ZhsAhxgm191xFsyzvieTMCbUWKMhFg9I6ci8q" crossorigin="anonymous"></script>

<style>
    body{
        padding:0;
        margin: 0;
    }
    .divcenter{
        position: absolute;
        top: 50%;
        left: 50%;
       transform: translate(-50%,-50%);
       width: 500px;
       height: 50%; 
    }
    p{
        border: solid 1px;
        margin: 0px;
        padding: 0px;
    }
    .spanX{
        float:right;
        margin-right: 10px; 
        width: 10px;  
       
    }
    span{
        cursor: pointer; 
    }
    h2{
       text-align: center;
    }

</style>
</head>
<body>
<div id="app" class="divcenter">
    <h2>标签记录器</h2>
    <div>
 <input type="text" placeholder="请输入相应信息后按回车键！" v-model="text" @keyup.Enter="info" style="width: 100%;height: 40px;">
 </div>

 <div>
     <p v-for="(list,index) in arr">
         <span style="background-color: blanchedalmond;"> {{index+1}} </span> {{list}}
         <span class="spanX"  @click="del(index)">x</span>
    </p>

    <div style="border: solid 1px;" v-show="arr.length!=0">
        <span>总数：{{arr.length}}</span>
        <span  style="float: right;" @click="delAll">Clear</span>
    </div>
    
</div>

</div>

<script>
    var app=new Vue({
        el:"#app",
        data:{
           arr:[],
           text:"",
        },
        methods:{
           info:function(){
            this.arr.push(this.text);
            this.text="";
           },
           del:function(index){
          this.arr.splice(index,1);
        } ,
        delAll:function(){
            this.arr=[];
        }

        }      
    })  
</script>
  
</body>
</html>