vue之列表排序-计算属性的应用 

<!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>列表排序</title>
</head>
<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="清输入名字" v-model="keyword">
        <button @click="sortType=2">年龄升序</button>
        <button @click="sortType=1">年龄降序</button>
        <button @click="sortType=0">原顺序</button>
        
        <ul>
            <li v-for="(p,index) in filPersons" :key="index">
                {{p.name}}--{{p.age}}--{{p.sex}}
            </li>
        </ul>
    </div>

    <script>
        
        
        //用computed实现
        const vm = new Vue({
                el: "#root",
                data: {
                    keyword: "",
                    sortType:0,//0代表原顺序，1代表降序，2代表升序
                    persons: [
                        { id: "001", name: "马冬梅", age: 30, sex: "女" },
                        { id: "002", name: "周冬雨", age: 33, sex: "女" },
                        { id: "003", name: "周杰伦", age: 28, sex: "男" },
                        { id: "004", name: "温兆伦", age: 21, sex: "男" },
                    ],
                    
                },
                computed:{
                    filPersons(){
                          const arr= this.persons.filter((p) => {
                             return p.name.indexOf(this.keyword) !== -1;
                         })

                         if (this.sortType!==0) {
                             arr.sort((p1,p2)=>{
                                 return this.sortType===1?p2.age-p1.age:p1.age-p2.age;
                             })
                         }
                         return arr;
                    }
                }

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

　　

posted @ 2022-11-01 10:21  小白字太白  阅读(71)  评论(0)    收藏  举报