Question

我有一个数组用户列表。我想根据顶部的搜索框（名称）过滤它们。我看到VueJS 1中有过滤器。但是VuesJS 2中没有过滤器。如何在VueJS 2中实现这一点

<input type="text" v-model="search"/>   
<div class="row profile" v-for="customer in customers">
 <div class="col-md-offset-1 col-md-3"><img :src="customer.profile_pic" class="profile-pic" /></div>
 <div class="col-md-8"><h4 class="name">{{customer.name}}</h4></div>
</div>
<script>
    data: function () {
      return{
        search: '',
        customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ]
      }
    }
</script>

Answer 1

我通过将我的属性“array”与数据元素和带有过滤元素的计算属性（数组）一起完成此操作。 HTML呈现已过滤的元素。我有一个绑定到文本框的属性。为简单起见，这样的事情：

data: function () {
      return{
        search: '',
        customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ]
},
computed:
{
    filteredCustomers:function()
    {
        var self=this;
        return this.customers.filter(function(cust){return cust.name.toLowerCase().indexOf(self.search.toLowerCase())>=0;});
    }
}

将HTML绑定到filteredCustomers。您现在应该根据您在搜索上键入的内容来设置反应式HTML。这个“过滤器”方法是数组的原生JavaScript，我将两个值都设置为低位，使其不区分大小写。

这是一个小提琴的工作示例： https://jsfiddle.net/dkmmhf5y/1/

编辑：在计算属性中添加了小提琴和代码更正

Answer 2

过滤器在vuejs 2中已经removed。正如@ azamat-sharapov建议的那样，您可以使用以下3种方法之一来重复使用过滤器：

我怎样才能在2.0中完成？


密新

使用方法
分隔模块
具有计算道具功能的独立模块

vuejs 2中过滤器的简单实现可以使用计算属性，该属性可以调用方法来获取过滤列表。在方法中，您可以传递列表，查询，它可以返回filtered列表。请参阅以下代码和工作演示here。以下是通用函数，可以移动到mixin或模块，并可以在多个组件中重复使用。

var vm = new Vue({
  el: '#demo',
  data: {
    customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ],
    columns: {
      id : {
        displayname : "id",
        sortorder : 1
      },
      name : {
        displayname : "name",
        sortorder : 1
      },
      email : {
        displayname : "email",
        sortorder : 1
      }
    },
    query: '',
   },
  computed: {
    tableFilter: function () {
        return this.findBy(this.customers, this.query, 'name')
    }
  },
  methods: {
    findBy: function (list, value, column) {
      return list.filter(function (item) {
        return item[column].includes(value)
      })
    }
  }
})

Answer 3

此方法对我有用

computed: {
   filteredList() {
     return this.postList.filter(post => {
       var vm = this;
       return post.title.toLowerCase().includes(vm.search.toLowerCase())
     })
   }
}

Answer 4

        <!-- Searching Bar Start -->
        <div class="form-group mb-2">
        <span style="float:left; margin:0 10px; padding-top:5px; color:black;">Search:</span>
        <input v-model="search" class="form-control" placeholder="Filter users by Queue" style="width:30%;">
            </div>
        <!-- Searching Bar End -->

<td style="width:25%;cursor:pointer;color: blue;" class="tablecolthree" @click="sortbytotal('pending_duration_day')">Pedning Duration <i class="fa fa-sort" aria-hidden="true"></i></td>

        return {
            search:'',
            dupsearch:'',
            currentSort:'pending_duration_day',
            currentSortDir:'asc',
        }
        methods: {
        sortbytotal:function(s) {
            this.dupsearch='sort';
            this.search='';
            if(s === this.currentSort) {
                this.currentSortDir = this.currentSortDir==='asc'?'desc':'asc';
            }
            this.currentSort = s;
        },
            date(e){
            if(this.stdate){
                var fromdate = [];
                this.loading = true;
                fromdate.push(moment(this.stdate).format('YYYY-MM-DD'));
                this.showstart = moment(this.stdate).format('MMM DD, YYYY');
                axios.get('/open-ticket-detail?date='+fromdate).then(response => {
                    this.openticketdetail = response.data;
                    this.loading = false;
                    //console.log(this.openticket);
                })
            }
            e.preventDefault();   
        }
        },
        computed:{
        sortedCats:function() 
        {
            var self=this;
            if(self.search!=''){
               this.dupsearch='';
            }

            if(this.dupsearch=='sort'){
                return this.openticketdetail.open_tickets.sort((a,b) => {
                    let modifier = 1;
                    if(this.currentSortDir === 'asc') modifier = -1;
                    if(a[this.currentSort] < b[this.currentSort]) return -1 * modifier;
                    if(a[this.currentSort] > b[this.currentSort]) return 1 * modifier;
                    return 0;
                });
            }
            return this.openticketdetail.open_tickets.filter(function(openticket){return openticket.queue_name.toLowerCase().indexOf(self.search.toLowerCase())>=0;});
        },
    },

Answer 5

我喜欢内森（Nathan）的回答，但我认为这样做会更好，并且不需要进行var self = this分配。当寻找存在时，Vue eslint插件在使用indexOf时会皱眉，这也会使eslint高兴。在这里：

data: function () {
      return{
        search: '',
        customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ]
},
computed:
{
    filteredCustomers () {
      return this.customers.filter((customer) => {
        return customer.name.toLowerCase().includes(this.search.toLowerCase())
      })
    }
}

Answer 6

`computed: {
    filteredResources(){
         return this.Surveyors.filter((surveyor)=>{
         return surveyor.Name.toLowerCase().match(this.searchQuery.toLowerCase());  
         })
      }
    }`

/ Surveyors是数据表名称，Surveyor是它的索引，就像在您的示例中您在客户中拥有客户一样 /

在文本框VueJS 2中键入时搜索列表

6 个答案: