Vuejs 搜索过滤器答案

【问题标题】：Vuejs Search filterVuejs 搜索过滤器
【发布时间】：2019-03-04 15:42:15
【问题描述】：

我有一个表格，其中显示了我使用以下代码获得的项目列表：

interface getResources {
    title: string;
    category: string;
    uri: string;
    icon: string;
}
@Component
export default class uservalues extends Vue {

    resources: getResources[] = [];

    created() {
        fetch('api/Resources/GetResources')
            .then(response => response.json() as Promise<getResources[]>)
            .then(data => {
                this.resources = data;
            });
        }
    }
}

这是我的桌子：

 <div class="panel panel-default">
     <div class="panel-heading" style="font-weight:bold"><span class="glyphicon glyphicon-align-justify"></span> All Resources</div>
         <div class="row">
             <div class="search-wrapper panel-heading col-sm-12">
                 <input class="form-control" type="text" v-model="searchQuery" placeholder="Search" />
             </div>                        
         </div>
         <div class="panel-body" style="max-height: 400px;overflow-y: scroll;">
             <table v-if="resources.length" class="table">
                 <thead>
                     <tr>
                         <th>Resource</th>
                     </tr>
                 </thead>
                 <tbody>
                     <tr v-for="item in resources">
                         <td><a v-bind:href="item.uri" target="_blank">{{item.title}}</a></td>
                     </tr>
                 </tbody>
             </table>
         </div>
     </div>
</div>

我正在尝试实现为用户过滤结果的搜索栏，但我迷路了！

有什么建议吗？

【问题讨论】：

您希望在输入例如B 时拥有以B 开头的项目？
对不起！是的，这就是我想要的
我不熟悉打字稿，但我可以使用通常的 Vue 代码给出解决方案
太好了！我很感激

标签： javascript typescript vue.js vuejs2 vue-component

【解决方案1】：

您可以在这种情况下使用computed 属性，因此，我创建了一个名为filteredResources 的属性，它将在v-for 循环中使用，我使用了虚拟数据，但您可以将resources 声明为空并且调用一个 promise 函数将其填充到 created 钩子中，如果您更喜欢单个文件组件或者您通过 CDN 使用 Vue 的以下代码，请检查此 code

new Vue({
  el: '#app',
  data() {
    return {
      searchQuery:'',
    resources:[
    {title:"aaa",uri:"aaaa.com",category:"a",icon:null},
     {title:"add",uri:"aaaa.com",category:"a",icon:null},
      {title:"aff",uri:"aaaa.com",category:"a",icon:null},
    {title:"bbb",uri:"bbbb.com",category:"b",icon:null},
    {title:"bdd",uri:"bbbb.com",category:"b",icon:null},
    {title:"bsb",uri:"bbbb.com",category:"b",icon:null},
    {title:"ccc",uri:"cccc.com",category:"c",icon:null},
    {title:"ddd",uri:"dddd.com",category:"d",icon:null}
    ]
    };
  },
  computed: {
    filteredResources (){
      if(this.searchQuery){
      return this.resources.filter((item)=>{
        return item.title.startsWith(this.searchQuery);
      })
      }else{
        return this.resources;
      }
    }
  }
 

})

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.16/vue.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" >

</head>
<body>
<div id="app">

   <div class="panel panel-default">
                <div class="panel-heading" style="font-weight:bold"><span class="glyphicon glyphicon-align-justify"></span> All Resources</div>
                <div class="row">
                    <div class="search-wrapper panel-heading col-sm-12">
                        <input class="form-control" type="text" v-model="searchQuery" placeholder="Search" />
                    </div>                        
                </div>
                <div class="panel-body" style="max-height: 400px;overflow-y: scroll;">
                    <table v-if="resources.length" class="table">
                        <thead>
                            <tr>
                                <th>Resource</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr v-for="item in filteredResources">
                                <td><a v-bind:href="item.uri" target="_blank">{{item.title}}</a></td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
</div>

</body>
</html>

【讨论】：

【解决方案2】：

您可以使用array 的includes() 功能来搜索句子或短语中的任何位置。

new Vue({
  el: '#app',
  data() {
    return {
        searchQuery: null,
        resources:[
            {title:"ABE Attendance",uri:"aaaa.com",category:"a",icon:null},
            {title:"Accounting Services",uri:"aaaa.com",category:"a",icon:null},
            {title:"Administration",uri:"aaaa.com",category:"a",icon:null},
            {title:"Advanced Student Lookup",uri:"bbbb.com",category:"b",icon:null},
            {title:"Art & Sciences",uri:"bbbb.com",category:"b",icon:null},
            {title:"Auxiliares Services",uri:"bbbb.com",category:"b",icon:null},
            {title:"Basic Skills",uri:"cccc.com",category:"c",icon:null},
            {title:"Board of Trustees",uri:"dddd.com",category:"d",icon:null}
        ]
    };
  },
  computed: {
    resultQuery(){
      if(this.searchQuery){
      return this.resources.filter((item)=>{
        return this.searchQuery.toLowerCase().split(' ').every(v => item.title.toLowerCase().includes(v))
      })
      }else{
        return this.resources;
      }
    }
  }
 

})

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.16/vue.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" >

</head>
<body>
<div id="app">
   <div class="panel panel-default">
   <div class="panel-heading">
         <strong> All Resources</strong></div>
            <div class="row">
                 <div class="search-wrapper panel-heading col-sm-12">
                     <input class="form-control" type="text" v-model="searchQuery" placeholder="Search" />
                </div>                        
            </div>
        <div class="table-responsive">
            <table v-if="resources.length" class="table">
                <thead>
                    <tr>
                         <th>Resource</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="item in resultQuery">
                        <td><a v-bind:href="item.uri" target="_blank">{{item.title}}</a></td>
                    </tr>
                </tbody>
            </table>
        </div>
   </div>
   </div>

</body>
</html>

基于这个答案→Vue.js search keyword in array

【讨论】：

我知道它已经过时了，但是如果我想在一个搜索输入框中搜索不只是标题，还想搜索 uri、类别等其他列怎么办？
试试这个函数：filteredResources (){ if(this.searchQuery.length > 3){ return this.resources.filter((item)=>{ var columns = item.title + item.uri ; 返回 this.searchQuery.toLowerCase().split(' ').every(v => columns.toLowerCase().includes(v)); }) } }

【解决方案3】：

这里是 Vue 3 版本的简单搜索。

const { createApp, ref } = Vue

const App = {
  setup() {
    let searchText = ref('')
    const list = [
      'orange',
      'red',
      'blue',
      'black',
      'white'
    ]
    
    function filteredList() {
      return list.filter(data => data.toLowerCase().includes(searchText.value.toLowerCase()))
    }
    
    return {searchText, filteredList}
  }
}

Vue.createApp(App).mount('#app')

<script src="https://unpkg.com/vue@next"></script>

<div id="app">
  <input type="text" v-model="searchText">
  <ul>
    <li v-for="data in filteredList()" :key="data">
      {{ data }}
    </li>
  </ul>
</div>

【讨论】：

【解决方案4】：

我找到了简单的方法...使用“@input 函数”.. 它对我有用！

new Vue({
  el: '#app',
  data() {
    return {
      searchQuery:'',
      resources:[
        {title:"aaa",uri:"aaaa.com",category:"a",icon:null},
        {title:"add",uri:"aaaa.com",category:"a",icon:null},
        {title:"aff",uri:"aaaa.com",category:"a",icon:null},
        {title:"bbb",uri:"bbbb.com",category:"b",icon:null},
        {title:"bdd",uri:"bbbb.com",category:"b",icon:null},
      ]
    };
  },
  methods: {
    
    getTextSearch: function(textSearch) {

        this.filteredResources= this.resources

        this.filteredResources= this.filteredResources.filter(item => {
            return item.uri.toLowerCase().includes(textSearch);
        });

    },

  }
 

})

这里是html：

    <!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.16/vue.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" >

</head>
<body>
<div id="app">

   <div class="panel panel-default">
                <div class="panel-heading" style="font-weight:bold"><span class="glyphicon glyphicon-align-justify"></span> All Resources</div>
                <div class="row">
                    <div class="search-wrapper panel-heading col-sm-12">
                        <input class="form-control" @input="getTextSearch($event)" type="text" placeholder="Search" />
                    </div>                        
                </div>
                <div class="panel-body" style="max-height: 400px;overflow-y: scroll;">
                    <table v-if="resources.length" class="table">
                        <thead>
                            <tr>
                                <th>Resource</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr v-for="item in filteredResources">
                                <td><a v-bind:href="item.uri" target="_blank">{{item.title}}</a></td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
</div>

</body>
</html>

【讨论】：