小程序实现模糊查询功能

上个页面过滤筛选

搜索功能

一般Vue的话使用模糊查询很简单很方便，但是小程序要如何实现呢

这里讲解的是无后台时过滤关键字进行查询搜索
如果想添加请求后台可以直接添加请求的数据就可以了

效果图

代码

wxml

<view class="top">
  <view class="topsearch">
    <view class="frame">
      <input value="{{shoopingtext}}" bindinput="shoppinginput"></input>
    </view>
    <text bindtap="search">搜索</text>
  </view>
</view>
<view class="history" wx:if="{{history}}">
  <view class="history_title">
    <text>历史搜索</text>
    <image src="../../img/icon/login/icon_close_orange.png" mode="widthFix" style="width:5%;" bindtap="cleanhistory"></image>
  </view>
  <view class="history_text">
    <text wx:for="{{newArray}}" wx:key="key" data-text="{{item}}" bindtap="textfz">{{item}}</text>
  </view>
</view>
<view class="none" wx:if="{{noneview}}">
  <image src="/images/null.png" mode="widthFix" style="width:20%"></image>
  <text>抱歉，没有相关商品</text>
</view>
<view class='swiper_con' wx:if="{{shoppinglist}}">
  <view class='swiper_con_view' wx:for="{{shoopingarray}}" wx:key="id" wx:if='{{item.status=="1"?true:false}}'>
    <image src="{{item.images}}" mode="widthFix" style="width:100%" data-status="{{item.status}}"></image>
    <view style="width:90%;margin:5%;">
      <text style="font-size:24rpx">{{item.title}}</text>
      <view class="swiper_con_view_view">
        <view style="width:80%;">
          <text style="font-size:24rpx;color:red;">￥{{item.money}}</text>
          <text style="font-size:18rpx;color:#B8B8B8;margin-left:5%;">已售{{item.sold}}</text>
        </view>
        <image src="/images/cart.png" mode="widthFix" style="width:10%;position:relative;left:8%;"></image>
      </view>
    </view>
  </view>
</view>

wxss

page{
  background-color: white;
}
 
.top {
  width: 100%;
  background-color: #f7f7f7;
}
 
.topsearch {
  width: 90%;
  margin-left: 5%;
  display: flex;
  padding: 2% 0;
  align-items: center;
}
 
.frame {
  background-color: white;
  width: 75%;
  border-radius: 20rpx;
  padding: 0 3%;
}
 
.frame>input {
  font-size: 24rpx;
  margin: 6rpx 0;
}
 
.topsearch>text {
  width: 10%;
  margin-left: 5%;
  color: #a8a7a7fa;
}
 
.history {
  background-color: white;
  padding: 4%;
}
 
.history_title {
  font-size: 30rpx;
  display: flex;
  justify-content: space-between;
  color: #a8a7a7fa;
  align-items: center;
}
 
.history_text {
  padding: 4% 0;
  display: flex;
  flex-wrap: wrap;
}
 
.history_text>text {
  background-color: #f7f7f7;
  padding: 1% 3%;
  margin: 2%;
  border-radius: 40rpx;
  font-size: 30rpx;
}
 
.history_text>text:first-child{
  margin-left: 0;
}
 
.none{
  margin-top: 10%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
 
.swiper_con {
  width: 96%;
  margin-left: 2%;
  display: flex;
  flex-wrap: wrap;
}
 
.swiper_con_view {
  width: 48%;
  height: 530rpx;
  background-color: white;
  margin: 10rpx 0;
}
 
.swiper_con_view:nth-child(even) {
  margin-left: 4%;
}
 
.swiper_con_view_view {
  margin-top: 5%;
  display: flex;
  align-items: center;
}

js

var util = require('../../utils/server'),
header = util.reqHeader(); 
Page({
  //清除历史记录
  cleanhistory: function(e) {
    this.setData({
      history: false, //隐藏历史记录
      historyArray: [], //清空历史记录数组
      newArray: [],
      shoopingtext: "" //清空搜索框
    })
  },
  //搜索
  search: function(e) {
    var searchtext = this.data.shoopingtext; //搜索框的值
    var sss = true;
    if (searchtext != "") {
      //将搜索框的值赋给历史数组
      this.data.historyArray.push(searchtext);
      //模糊查询 循环查询数组中的title字段
      for (var index in this.data.shoopingarray) {
        var num = this.data.shoopingarray[index].title.indexOf(searchtext);
        let temp = 'shoopingarray[' + index + '].status';
        if (num != -1) { //不匹配的不显示
          this.setData({
            [temp]: 1,
          })
          sss = false //隐藏未找到提示
        }
      }
      this.setData({
        history: false, //隐藏历史记录
        noneview: sss, //隐藏未找到提示
        shoppinglist: true, //显示商品列表
        newArray: this.data.historyArray //给新历史记录数组赋值
      })
    } else {
      this.setData({
        noneview: true, //显示未找到提示
        shoppinglist: false, //隐藏商品列表
        history: false, //隐藏历史记录
      })
    }
  },
  data: {
    shoopingtext: "", //搜索框的值
    history: false, //显示历史记录
    noneview: false, //显示未找到提示
    shoppinglist: false, //显示商品列表
    historyArray: [], //历史记录数组,
    newArray: [], //添加历史记录数组
    shoopingarray:[],
  },
  //搜索框的值
  shoppinginput: function(e) {
    //当删除input的值为空时
    if (e.detail.value == "") {
      this.setData({
        history: true, //显示历史记录
        shoppinglist: false //隐藏商品列表
      });
      //所有商品列表的状态改为0
      for (var index in this.data.shoopingarray) {
        let temp = 'shoopingarray[' + index + '].status';
        this.setData({
          [temp]: 0,
        })
      }
    }
    this.setData({
      shoopingtext: e.detail.value
    })
  },
  onLoad: function (options) {
    var that = this
      util.sendRrquest('https://cnodejs.org/api/v1/topics', 'get','data', header)
.then(function (res) {
      console.log(res)
      that.setData({
        shoopingarray: res.data.data
       //然后在使用的时候这样使用
})
}, function (error) {
      console.log(error);
})
},
  //点击历史记录赋值给搜索框
  textfz: function(e) {
    this.setData({
      shoopingtext: e.target.dataset.text
    })
  }
})

json

{
  "usingComponents": {
    "van-popup": "@vant/weapp/popup/index"
  },
  "navigationBarTitleText": "小组"
}

我这里运用了vant框架写的样式 调取的是cnode接口