海浪Code

Appearance

html
<!DOCTYPE html>
<html lang="zh-CN">

<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>Vue</title>
    <script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/vue/2.6.14/vue.js"
        type="application/javascript"></script>
</head>

<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入姓名" 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 filPer" :key="index">{{p.name}} - {{p.age}} - {{p.sex}}</li>
        </ul>
    </div>
    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el: '#root',
            data: {
                name: 'Vue',
                keyWord:'',
                sortType: 0,//0原顺序，1降序，2升序
                persons:[
                    {id:'001', name:'马冬梅', age:22, sex:'女'},
                    {id:'002', name:'周冬雨', age:33, sex:'女'},
                    {id:'003', name:'周杰伦', age:43, sex:'男'},
                    {id:'004', name:'温兆伦', age:32, sex:'男'}
                ]
            },
            computed: {
                filPer(){
                    const arr = this.persons.filter((p)=>{
                        return p.name.indexOf(this.keyWord) !== -1
                    })
                    // 判断一下是否需要排序
                    if(this.sortType){
                        // 拿到过滤完的数组进行排序,sort会改变原数组
                        arr.sort((p1,p2)=>{
                            return this.sortType === 1 ? p2.age-p1.age : p1.age - p2.age
                        })
                    }
                    return arr
                }
            }
        })
    </script>
</body>

</html>