vue之列表过滤 

<!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=edge">
    <script type="text/javascript" src="../js/vue.js"></script>

    <title>3.列表过滤</title>
</head>
<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="清输入名字" v-model="keyword" >
        <ul>
            <li v-for="(p,index) in filPersons" :key="index">
                {{p.name}}--{{p.age}}--{{p.sex}}
            </li>
        </ul>
    </div>

    <script>
        //用watch实现
        // const vm=new Vue({
        //     el:"#root",
        //     data:{
        //         keyword:"",
        //         persons:[
        //             {id:"001",name:"马冬梅",age:18,sex:"女"},
        //             {id: "002", name: "周冬雨", age: 19,sex:"女"},
        //             {id:"003",name:"周杰伦",age:20,sex:"男"},
        //             {id:"004",name:"温兆伦",age:21,sex:"男"},
        //         ],
        //         filPersons:[]
        //     },
        //     watch:{
        //         keyword:{
        //             immediate:true,
        //             handler(val){
        //                  this.filPersons = this.persons.filter((p) => {
        //                     return p.name.indexOf(val) !== -1;
        //                 })
        //             }
        //         }
        //     }

        // })
        
        //用computed实现
        const vm = new Vue({
                el: "#root",
                data: {
                    keyword: "",
                    persons: [
                        { id: "001", name: "马冬梅", age: 18, sex: "女" },
                        { id: "002", name: "周冬雨", age: 19, sex: "女" },
                        { id: "003", name: "周杰伦", age: 20, sex: "男" },
                        { id: "004", name: "温兆伦", age: 21, sex: "男" },
                    ],
                    
                },
                computed:{
                    filPersons(){
                          return this.persons.filter((p) => {
                             return p.name.indexOf(this.keyword) !== -1;
                         })
                    }
                }

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

 

posted @ 2022-11-01 10:02  小白字太白  阅读(169)  评论(0)    收藏  举报