vue完成列表的搜索和排序

vue的一般搜索：

有以下两种方法：

(1)在methods属性中

<!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">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="text" v-model="serchName">
        <ul>
            <li v-for="(p,index) in filterPersons(serchName)" :key="index">
                {{index}}---{{p.name}}---{{p.age}}
            </li>
        </ul>

    </div>
    <script type="text/javascript" src="../js/vue.js"></script>
    <script type="text/javascript">
    new Vue({
        el:'#app',
        data:{
            serchName:'',
            persons:[
                {name: 'Tom', age:18},
                {name: 'Jack', age:17},
                {name: 'Bob', age:19},
                {name: 'Mary', age:16}
            ]
        },
        methods:{
            filterPersons(serchName){   //根据关键词，进行数据的搜索
              //注意：forEach some filter findIndex 这些都属于数组的新方法 
              // 都会对数组中的每一项，进行遍历，执行相关的操作
              return this.persons.filter(p=>{
                  if(p.name.includes(serchName)){
                      return p
                  }
              }); 
            }
        },
    })
    </script>
</body>
</html>

（2）在computed属性中：computed在计算后返回一个结果

<!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">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="text" v-model="serchName">
        <ul>
            <li v-for="(p,index) in filterPersons" :key="index">
                {{index}}---{{p.name}}---{{p.age}}
            </li>
        </ul>

    </div>
    <script type="text/javascript" src="../js/vue.js"></script>
    <script type="text/javascript">
    new Vue({
        el:'#app',
        data:{
            serchName:'',
            persons:[
                {name: 'Tom', age:18},
                {name: 'Jack', age:17},
                {name: 'Bob', age:19},
                {name: 'Mary', age:16}
            ]
        },
        computed:{
            filterPersons(){
                //取出相关的数据
                const {serchName,persons}=this;
                //最终需要显示的数组
                let fPersons;
                //对fPersons进行过滤
                fPersons=persons.filter(p=>p.name.indexOf(serchName)!==-1);
                return fPersons;
            }
        }
    })
    </script>
</body>
</html>

vue的排序

<!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">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="text" v-model="serchName">
        <ul>
            <li v-for="(p,index) in filterPersons" :key="index">
                {{index}}---{{p.name}}---{{p.age}}
            </li>
        </ul>
        <button @click="setOrderType(1)">年龄升序</button>
        <button @click="setOrderType(2)">年龄降序</button>
        <button @click="setOrderType(0)">原本顺序</button>

    </div>
    <script type="text/javascript" src="../js/vue.js"></script>
    <script type="text/javascript">
    new Vue({
        el:'#app',
        data:{
            serchName:'',
            orderType:0, //0代表原本顺序，1代表升序，2代表降序
            persons:[
                {name: 'Tom', age:18},
                {name: 'Jack', age:17},
                {name: 'Bob', age:19},
                {name: 'Mary', age:16}
            ]
        },
        computed:{
            filterPersons(){
                //取出相关的数据
                const {serchName,persons,orderType}=this;
                //最终需要显示的数组
                let fPersons;
                //对fPersons进行过滤
                fPersons=persons.filter(p=>p.name.indexOf(serchName)!==-1);
                //排序
                if(orderType!==0){
                    fPersons.sort(function(p1,p2){  //如果返回负数，p1在前面，返回正数，则p2在前面
                        //1代表升序，2代表降序
                        if(orderType===2){
                            return p2.age-p1.age
                        }else{
                            return p1.age-p2.age
                        }

                    })
                }
                return fPersons;
            }
        },
        methods:{
            setOrderType(orderType){
                this.orderType=orderType
            }
        }
    })
    </script>
</body>
</html>

vue完成列表的搜索和排序

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