17.品牌列表案例 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=adge">
    <title>Document</title>
    <script src="vue.js"></script>
</head>
<body>
    <div id="app">
    id:<input type="text" v-model="id">
    name:<input type="text" v-model="name">
    <input type="button" value="添加" @click="add">
        <table border="1">
            <tr>
                <th>序号</th>
                <th>名称</th>
                <th>时间</th>
                <th>操作</th>
            </tr>
            <tr v-for="item in pinpai" :key="item.id">
                <td>{{item.id}}</td>
                <td>{{item.name}}</td>
                <td>{{item.date}}</td>
                <td>
                    <a href="#" @click.prevent="del(item.id)">删除</a>
                </td>
            </tr>
        </table>
    </div>
</body>
<script>
    //创建Vue实例，得到ViewModel
    var vm=new Vue({
        el:"#app",
        data:{
            id:'',
            name:'',
            pinpai:[
                    {id:1,name:"奔驰",date:new Date()},
                    {id:2,name:"宝马",date:new Date()}
                    ]
        },
        methods:{
            add(){
                this.pinpai.push({id:this.id,name:this.name,date:new Date()})
                this.id=this.name=""
            },
            del(id){
                //console.log(id)
                //分析业务逻辑：
                //1.根据拿到的商品id,查找到对应的商品索引
                //2.根据拿到的索引值，去数组中调用splice方法删除对应的那个元素
                /*for(let i=0;i<this.pinpai.length;i++){
                    if(this.pinpai[i].id==id){
                        this.pinpai.splice(i,1)
                        break;
                    }
                }*/
                //另一种判断id,及删除方法
                const index=this.pinpai.findIndex(function(item,i,arr){
                    //if(item.id==id){
                        //return true
                    //}
                    return item.id==id
                })
                this.pinpai.splice(index,1)
                console.log(index)
            }
        }
    });
</script>
</html>

 

posted @ 2021-03-09 08:44  种太阳  阅读(22)  评论(0)    收藏  举报