2、前端小案例（一）

用到的知识点：

　　1、 border-collapse

　　2、 push

　　3、splice

    <style>
        #app{
             700px;
            margin: 10px auto;
        }
        .add{
            border: 1px solid #000;
            margin-bottom: 10px;
            padding: 5px;
        }
        .tb{
            border-collapse: collapse;
             100%;
        }
        .tb td, .tb th{
            border: 1px solid #000;
            text-align: center;
            padding: 5px;
        }
        .tb th{
            background-color: #0094ff;
            color: #fff;
        }
    </style>
    <script src="./vue2.js"></script>
    <div id="app">
        <div class="add">
            编号：<input type="text" v-model="newId" >
            品牌名称：<input type="text" v-model="newName" @keyDown.enter="addNewData">
            <button @click="addNewData">添加</button>
        </div>
        <div  class="add">
            品牌名称：<input type="text">
        </div>
        <div>
            <table class="tb">
                <tr>
                    <th>编号</td>
                    <th>品牌名称</td>
                    <th>创立时间</td>
                    <th>操作</td>
                </tr>
                <tr v-for="(item,index) in list" :key="index">
                    <td>{{ item.id}}</td>
                    <td>{{ item.name}} </td>
                    <td> {{ item.ctime}} </td>
                    <td>
                        <button @click="delData(index)">删除</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    <script>
        var vm = new  Vue({
            el:"#app",
            data:{
                newId:'',
                newName:'',
                list:[
                    { id: 11, name:'茅台', ctime:new Date()},
                    { id: 22, name:'衡水老白干', ctime:new Date()},
                    { id: 33, name:'中华', ctime:new Date()},
                    { id: 44, name:'玉溪', ctime:new Date()}

                ]
            },
            methods:{
                addNewData(){
                    console.log(this)
                    // this.list.id = newId
                    this.list.push({ id:this.newId, name: this.newName, ctime: new Date()})
                    this.newId = ''
                    this.newName = ''
                },
                delData(item){
                    this.list.splice(item,1)
                }   
            }
        })
    </script>