模糊查询(前端)

首先,模糊查询一般交由后台处理。
(数组对象的)
当然前端也可以实现,我这里的主要实现方式有两种,其一是使用fitler 过滤器:

ilter() 方法创建一个新的数组,新数组中的元素是通过检查指定数组中符合条件的所有元素。
注意: filter() 不会对空数组进行检测。
注意: filter() 不会改变原始数组。
话不多说,上代码:

DOCTYPE html>
<html lang="en">
<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">
    <link href="https://cdn.bootcss.com/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js">script>

    <title>模糊查询fitlertitle>
head>
<body>
    <div class="container">
        <div class="row">
        <div class="col-lg-6" style="margin:20px">
            <div class="input-group">
            <span class="input-group-btn">
                <button class="btn btn-default" type="button">搜索button>
            span>
            <input type="text" v-model="text" class="form-control" placeholder="Search for...">
            div>
        div>
   
        <table class="table table-hover">
            <thead>
                <tr>
                    <th>序号th>
                    <th>姓名th>
                    <th>性别th>
                    <th>爱好th>
                    <th>年龄th>
                tr>
            thead>
            <tbody>
                <tr v-for="(item,i) in searchResult" :key="i">
                    <td>{{i+1}}td>
                    <td>{{item.name}}td>
                    <td>{{item.sex}}td>
                    <td>{{item.hobby}}td>
                    <td>{{item.age}}td>
                tr>
            tbody>
        table>
    div>
   <script>
                 var vm = new Vue({
              el:'.container',
              data:{
                text:'',
                info: [{
                  name: '雷森',
                  sex: '男',
                 hobby: '打篮球',
                  age: '18'
                },{
                  name: '刘伟',
                  sex: '男',
                 hobby: '旅游',
                  age: '24'
                },{
                  name: '刘微',
                  sex: '女',
                 hobby: '旅游',
                  age: '24'
                }, {
                 name: '胡汉三',
                  sex: '男',
                 hobby: '美食',
                  age: '30'
                }, {
                 name: '张艺',
                  sex: '女',
                 hobby: '看韩剧',
                  age: '24'
                }, {
                  name: '欧阳',
                  sex: '女',
                 hobby: '环游世界',
                  age: '25'
                }]
              },
              computed:{
                searchResult() {
                        if (this.text) {
                        // console.log(this.info)
                        return this.info.filter(
                            item =>
                            item.name.indexOf(this.text) > -1 ||
                            item.hobby.indexOf(this.ipt) > -1
                        );
                        } else {
                        return this.info;
                        }
                    }
                }
          })  

   script>
body>
html>

其二是使用indexof()方法,indexOf() 返回某个指定的字符在某个字符串中首次出现的位置,如果没有找到就返回-1;
定义一个新的空数组,对原数组遍历,用indexOf判断,不等一 -1,就push到新数组里,最后teturn 新数组

DOCTYPE html>
<html lang="en">
<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">
    <link href="https://cdn.bootcss.com/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js">script>

    <title>模糊查询title>
head>
<body>
    <div class="container">
        <div class="row">
        <div class="col-lg-6" style="margin:20px">
            <div class="input-group">
            <span class="input-group-btn">
                <button class="btn btn-default" type="button">搜索button>
            span>
            <input type="text" v-model="text" class="form-control" placeholder="Search for...">
            div>
        div>
   
        <table class="table table-hover">
            <thead>
                <tr>
                    <th>序号th>
                    <th>姓名th>
                    <th>性别th>
                    <th>爱好th>
                    <th>年龄th>
                tr>
            thead>
            <tbody>
                <tr v-for="(item,i) in searchResult" :key="i">
                    <td>{{i+1}}td>
                    <td>{{item.name}}td>
                    <td>{{item.sex}}td>
                    <td>{{item.hobby}}td>
                    <td>{{item.age}}td>
                tr>
            tbody>
        table>
    div>
    <script>
        var vm = new Vue({
        el:'.container',
        data:{
          text:'',
          info: [{
            name: '雷森',
            sex: '男',
           hobby: '打篮球',
            age: '18'
          },{
            name: '刘伟',
            sex: '男',
           hobby: '旅游',
            age: '24'
          },{
            name: '刘微',
            sex: '女',
           hobby: '旅游',
            age: '24'
          }, {
           name: '胡汉三',
            sex: '男',
           hobby: '美食',
            age: '30'
          }, {
           name: '张艺',
            sex: '女',
           hobby: '看韩剧',
            age: '24'
          }, {
            name: '欧阳',
            sex: '女',
           hobby: '环游世界',
            age: '25'
          }]
        },
        computed:{
          searchResult() {
                  if (this.text) {
                  console.log(this.info)
                  return this.info.filter(
                      item =>
                      item.name.indexOf(this.text) > -1 ||
                      item.hobby.indexOf(this.ipt) > -1
                  );
                  } else {
                  return this.info;
                  }
              }
          }
    })  

script> 
body>

html>

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