微信小程序—這個完美的搜索框一定是你需要的，拿去用（熱門搜索、歷史搜索、幫助搜索...）

搜索框是比較常用的，看似簡單，邏輯甚是複雜，急需一個邏輯嚴謹、交互優雅、功能齊全的，假如您是需要搜索框附帶熱門搜索、歷史搜索、幫助搜索等功能，恭喜，這個拿去用就是了。

先看效果

不信你試試，體驗

如果你覺得還行的話，可以直接複製下面代碼了，當然你也可以好好研究下邊的代碼，值得學習

js

Page({
  data: {
    keywrod: '',
    searchStatus: false,
    goodsList: [],
    helpKeyword: [],
    historyKeyword: [],
    categoryFilter: false,
    currentSortType: 'default',
    currentSortOrder: '',
    filterCategory: [],
    defaultKeyword: {},
    hotKeyword: [],
    page: 1,
    size: 20,
    currentSortType: 'id',
    currentSortOrder: 'desc',
    categoryId: 0
  },
  //事件處理函數
  closeSearch: function () {
    wx.navigateBack()
  },
  clearKeyword: function () {
    this.setData({
      keyword: '',
      searchStatus: false
    });
  },
  onLoad: function () {
    this.getSearchKeyword();
  },

  getSearchKeyword() {
    let that = this;
    //請求網絡加載——獲取歷史搜索、熱詞搜索
    that.setData({
      historyKeyword: ["瑜伽墊子", "充電寶"],
      defaultKeyword: {
        keyword: "請輸入商品"
      },
      hotKeyword: [{
        keyword: "格子襯衫"
      }, {
        keyword: "揹帶褲"
      }, {
        keyword: "小白鞋"
      }, {
        keyword: "黃金眼霜"
      }, {
        keyword: "牛仔褲"
      }, {
        keyword: "口罩"
      }]
    });
  },

  inputChange: function (e) {

    this.setData({
      keyword: e.detail.value,
      searchStatus: false
    });
    this.getHelpKeyword();
  },
  getHelpKeyword: function () {
    let that = this;
    //請求網絡加載——獲取搜索框提示詞
    that.setData({
      helpKeyword: ["格子襯衫", "小白鞋", "揹帶褲", "黃金眼霜", "口罩", "牛仔褲"]
    })
  },
  inputFocus: function () {
    this.setData({
      searchStatus: false,
      goodsList: []
    });

    if (this.data.keyword) {
      this.getHelpKeyword();
    }
  },
  clearHistory: function () {
    this.setData({
      historyKeyword: []
    })
    //請求網絡加載——清除歷史數據
  },
  getGoodsList: function () {
    let that = this;
    //請求網絡加載——獲取商品列表
    that.setData({
      searchStatus: true,
      categoryFilter: false,
      goodsList: [{
        id: "100000000",
        list_pic_url: "cloud://normal-598/project/shangping/E4A9FCC49753209A34D200B4E376C3F2.jpg",
        name: "時尚娃娃領蕾絲拼接花邊連衣裙",
        retail_price: 1000
      }, {
        id: "100000001",
        list_pic_url: "cloud://nor24598/project/shangping/C4742392DD258AD08D4257B60C0840B4.jpg",
        name: "無袖襯衫格子連衣裙",
        retail_price: 800
      }, {
        id: "100000002",
        list_pic_url: "cloud://normal-env-ta6924598/project/shangping/2AB3D2A1FBF8C903D546B1910B0B4FBE.jpg",
        name: "中長款圓領網紗拼連衣裙",
        retail_price: 800
      }],
      filterCategory: [{
        name: "居家"
      }],
      page: 1,
      size: 100
    });

    //重新獲取關鍵詞
    that.getSearchKeyword();
  },
  onKeywordTap: function (event) {

    this.getSearchResult(event.target.dataset.keyword);

  },
  getSearchResult(keyword) {
    this.setData({
      keyword: keyword,
      page: 1,
      categoryId: 0,
      goodsList: []
    });

    this.getGoodsList();
  },
  openSortFilter: function (event) {
    let currentId = event.currentTarget.id;
    switch (currentId) {
      case 'categoryFilter':
        this.setData({
          'categoryFilter': !this.data.categoryFilter,
          'currentSortOrder': 'asc'
        });
        break;
      case 'priceSort':
        let tmpSortOrder = 'asc';
        if (this.data.currentSortOrder == 'asc') {
          tmpSortOrder = 'desc';
        }
        this.setData({
          'currentSortType': 'price',
          'currentSortOrder': tmpSortOrder,
          'categoryFilter': false
        });

        this.getGoodsList();
        break;
      default:
        //綜合排序
        this.setData({
          'currentSortType': 'default',
          'currentSortOrder': 'desc',
          'categoryFilter': false
        });
        this.getGoodsList();
    }
  },
  selectCategory: function (event) {
    let currentIndex = event.target.dataset.categoryIndex;
    let filterCategory = this.data.filterCategory;
    let currentCategory = null;
    for (let key in filterCategory) {
      if (key == currentIndex) {
        filterCategory[key].selected = true;
        currentCategory = filterCategory[key];
      } else {
        filterCategory[key].selected = false;
      }
    }
    this.setData({
      'filterCategory': filterCategory,
      'categoryFilter': false,
      categoryId: currentCategory.id,
      page: 1,
      goodsList: []
    });
    this.getGoodsList();
  },
  onKeywordConfirm(event) {
    this.getSearchResult(event.detail.value);
  }
})

wxml

<scroll-view class="container" style="height: 100%;">
  <view class="search-header">
    <view class="input-box">
      <image class="icon" src="https://6e6f-normal-env-ta4598.tcb.qcloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20150730_style_img_icon-normal_search2-2fb94833aa.png?sign=af695f09ab760f7a2fe3fe020890c087&t=1583917399"></image>
      <input name="input" class="keywrod" focus="true" value="{{keyword}}" confirm-type="search" bindinput="inputChange" bindfocus="inputFocus" bindconfirm="onKeywordConfirm" confirm-type="search" placeholder="{{defaultKeyword.keyword}}" />
      <image class="del" wx:if="{{keyword}}" bindtap="clearKeyword" src="https://6e6f-no4598.tcb.qcloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20150730_style_img_icon-normal_clearIpt-f71b83e3c2.png?sign=f7dcbca08c3a116c0d586909270c1e64&t=1583917343"></image>
    </view>
    <view class="right" bindtap="closeSearch">取消</view>
  </view>
  <view class="no-search" wx:if="{{ !searchStatus}}">
    <view class="serach-keywords search-history" wx:if="{{!keyword  && historyKeyword.length}}">
      <view class="h">
        <text class="title">歷史記錄</text>
        <image class="icon" bindtap="clearHistory" src="https://6e6f-n598.tcb.qcloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20150730_style_img_icon-normal_del1-93f0a4add4.png?sign=79b5e8665d885870ff23e527777fd206&t=1583917292"></image>
      </view>
      <view class="b">
        <view class="item" bindtap="onKeywordTap" data-keyword="{{item}}" wx:for="{{historyKeyword}}" hover-class="navigator-hover">{{item}}</view>
      </view>
    </view>
    <view class="serach-keywords search-hot" wx:if="{{!keyword}}">
      <view class="h">
        <text class="title">熱門搜索</text>
      </view>
      <view class="b">
        <view class="item {{item.is_hot === 1 ? 'active' : ''}}" hover-class="navigator-hover" bindtap="onKeywordTap" data-keyword="{{item.keyword}}" wx:for="{{hotKeyword}}">{{item.keyword}}</view>
      </view>
    </view>
    <view class="shelper-list" wx:if="{{keyword}}">
      <view class="item" hover-class="navigator-hover" wx:for="{{helpKeyword}}" bindtap="onKeywordTap" data-keyword="{{item}}">{{item}}</view>
    </view>
  </view>

  <view class="search-result" wx:if="{{ searchStatus && goodsList.length}}">
    <view class="sort">
      <view class="sort-box">
        <view class="item {{currentSortType == 'default' ? 'active' : ''}}" bindtap="openSortFilter" id="defaultSort">
          <text class="txt">綜合</text>
        </view>
        <view class="item by-price {{currentSortType == 'price' ? 'active' : ''}} {{currentSortOrder == 'asc'  ? 'asc' : 'desc'}}" bindtap="openSortFilter" id="priceSort">
          <text class="txt">價格</text>
        </view>
        <view class="item {{currentSortType == 'category' ? 'active' : ''}}" bindtap="openSortFilter" id="categoryFilter">
          <text class="txt">分類</text>
        </view>
      </view>
      <view class="sort-box-category" wx-if="{{categoryFilter}}">
        <view class="item {{item.checked ? 'active' : ''}}" wx:for="{{filterCategory}}" wx:key="cate-{{item.id}}" data-category-index="{{index}}" bindtap="selectCategory">{{item.name}}</view>
      </view>
    </view>
    <view class="cate-item">
      <view class="b">
        <navigator class="item {{(iindex + 1) % 2 == 0 ? 'item-b' : ''}}" url="/pages/goods/goods?id={{iitem.id}}" wx:for="{{goodsList}}" wx:for-item="iitem" wx:for-index="iindex">
          <image class="img" src="{{iitem.list_pic_url}}" background-size="cover"></image>
          <text class="name">{{iitem.name}}</text>
          <text class="price">￥{{iitem.retail_price}}</text>
        </navigator>
      </view>
    </view>
  </view>

  <view class="search-result-empty" wx:if="{{!goodsList.length && searchStatus}}">
    <image class="icon" src="https://6e6f-normal-env-ta6pc-1300924598.tcb.qcloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20161201_style_img_icon-normal_noSearchResult-7572a94f32.png?sign=20adb623b971e8e8cb6fc453a25f17bc&t=1583917226"></image>
    <text class="text">您尋找的商品還未上架</text>
  </view>
</scroll-view>

wxss

page{
  min-height: 100%;
  background-color: #f4f4f4;
}

view,image,text,navigator{
  box-sizing: border-box;
  padding:0;
  margin:0;

}

view,text{
  font-family: PingFangSC-Light,helvetica,'Heiti SC';
  font-size: 29rpx;
  color: #333;
}


.container{
  min-height: 100%;
  background-color: #f4f4f4;
  box-sizing: border-box;
  font-family: PingFangSC-Light,helvetica,'Heiti SC';
}

.search-header{
    position: fixed;
    top: 0;
    width: 750rpx;
    height: 91rpx;
    display: flex;
    background: #fff;
    border-bottom: 1px solid rgba(0,0,0,.15);
    padding: 0 31.25rpx;
    font-size: 29rpx;
    color: #333;
}

.search-header .input-box{
    position: relative;
    margin-top: 16rpx;
    float: left;
    width: 0;
    flex: 1;
    height: 59rpx;
    line-height: 59rpx;
    padding: 0 20rpx;
    background: #f4f4f4;
}

.search-header .icon{
    position: absolute;
    top: 14rpx;
    left: 20rpx;
    width: 31rpx;
    height: 31rpx;
}

.search-header .del{
    position: absolute;
    top: 3rpx;
    right: 10rpx;
    width: 53rpx;
    height: 53rpx;
    z-index: 10;
}

.search-header .keywrod{
    position: absolute;
    top: 0;
    left: 40rpx;
    width: 506rpx;
    height: 59rpx;
    padding-left: 30rpx;
}

.search-header .right{
    margin-top: 24rpx;
    margin-left: 31rpx;
    margin-right: 6rpx;
    width: 58rpx;
    height: 43rpx;
    line-height: 43rpx;
    float: right;
}

.no-search{
    height: auto;
    overflow: hidden;
    margin-top: 91rpx;
}

.serach-keywords{
    background: #fff;
    width: 750rpx;
    height: auto;
    overflow: hidden;
    margin-bottom: 20rpx;
}

.serach-keywords .h{
    padding: 0 31.25rpx;
    height: 93rpx;
    line-height: 93rpx;
    width: 100%;
    color: #999;
    font-size: 29rpx;
}

.serach-keywords .title{
    display: block;
    width: 120rpx;
    float: left;
}

.serach-keywords .icon{
    margin-top: 19rpx;
    float: right;
    display: block;
    margin-left: 511rpx;
    height: 55rpx;
    width: 55rpx;
}

.serach-keywords .b{
    width: 750rpx;
    height: auto;
    overflow: hidden;
    padding-left: 31.25rpx;
}

.serach-keywords .item{
    display: inline-block;
    width: auto;
    height: 48rpx;
    line-height: 48rpx;
    padding:0 15rpx;
    border: 1px solid #999;
    margin: 0 31.25rpx 31.25rpx 0;
    font-size: 24rpx;
    color: #333;
}

.serach-keywords .item.active{
    color: #b4282d;
    border: 1px solid #b4282d;
}

.shelper-list{
    width: 750rpx;
    height: auto;
    overflow: hidden;
    background: #fff;
    padding: 0 31.25rpx;
}

.shelper-list .item{
    height: 93rpx;
    width: 687.5rpx;
    line-height: 93rpx;
    font-size: 24rpx;
    color: #333;
    border-bottom: 1px solid #f4f4f4;
}


.sort{
    position: fixed;
    top: 91rpx;
    background: #fff;
    width: 100%;
    height: 78rpx;
}

.sort-box{
    background: #fff;
    width: 100%;
    height: 78rpx;
    overflow: hidden;
    padding: 0 30rpx;
    display: flex;
    border-bottom: 1px solid #d9d9d9;
}

.sort-box .item{
    height: 78rpx;
    line-height: 78rpx;
    text-align: center;
    flex:1;
    color: #333;
    font-size: 30rpx;
}

.sort-box .item .txt{
    display: block;
    width: 100%;
    height: 100%;
    color: #333;
}

.sort-box .item.active .txt{
    color: #b4282d;
}

.sort-box .item.by-price{
    background: url(https://6e6f-normalloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20161201_style_img_icon-normal_no-3127092a69.png?sign=7941253b377d6a263f12d720aa479d25&t=1583928039) 155rpx center no-repeat;
    background-size: 15rpx 21rpx;
}

.sort-box .item.by-price.active.asc{
    background: url(https://6e6f-norb.qcloud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20161201_style_img_icon-normal_up-636b92c0a5.png?sign=99ac0c167ab94d95c37640e9b0812b40&t=1583917134) 155rpx center no-repeat;
    background-size: 15rpx 21rpx;
}

.sort-box .item.by-price.active.desc{
    background: url(https://6e6loud.la/project/wangyiyanxuan/icon/hxm_yanxuan-wap_p_20161201_style_img_icon-normal_down-95e035f3e5.png?sign=9bd60d4c35b1464491f8d1f212d315f5&t=1583917041) 155rpx center no-repeat;
    background-size: 15rpx 21rpx;
}

.sort-box-category{
    background: #fff;
    width: 100%;
    height: auto;
    overflow: hidden;
    padding: 40rpx 40rpx 0 0;
    border-bottom: 1px solid #d9d9d9;
}

.sort-box-category .item{
    height: 54rpx;
    line-height: 54rpx;
    text-align: center;
    float: left;
    padding: 0 16rpx;
    margin: 0 0 40rpx 40rpx;
    border: 1px solid #666;
    color: #333;
    font-size: 24rpx;
}

.sort-box-category .item.active{
    color: #b4282d;
    border: 1px solid #b4282d;
}

.cate-item{
    margin-top: 175rpx;
    height: auto;
    overflow: hidden;
}

.cate-item .h{
    height: 145rpx;
    width: 750rpx;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.cate-item .h .name{
    display: block;
    height: 35rpx;
    margin-bottom: 18rpx;
    font-size: 30rpx;
    color: #333;
}

.cate-item .h .desc{
    display: block;
    height: 24rpx;
    font-size: 24rpx;
    color: #999;
}

.cate-item .b{
  width: 750rpx;
  padding: 0 6.25rpx;
  height: auto;
  overflow: hidden;
}

.cate-item .list-filter{
    height: 80rpx;
    width: 100%;
    background: #fff;
    margin-bottom: 6.25rpx;
}

.cate-item .b .item{
  float: left;
  background: #fff;
  width: 365rpx;
  margin-bottom: 6.25rpx;
  padding-bottom: 33.333rpx;
  height: auto;
  overflow: hidden;
  text-align: center;
}

.cate-item .b .item-b{
  margin-left: 6.25rpx;
}

.cate-item .item .img{
  width: 302rpx;
  height: 302rpx;
}

.cate-item .item .name{
  display: block;
  width: 365.625rpx;
  height: 35rpx;
  margin: 11.5rpx 0 22rpx 0;
  text-align: center;
  overflow: hidden;
  padding: 0 20rpx;
  font-size: 30rpx;
  color: #333;
}

.cate-item .item .price{
  display: block;
  width: 365.625rpx;
  height: 30rpx;
  text-align: center;
  font-size: 30rpx;
  color: #b4282d;
}

.search-result-empty{
    width: 100%;
    height: 100%;
    padding-top: 300rpx;
}

.search-result-empty .icon{
    margin: 0 auto;
    display: block;
    width: 240rpx;
    height: 240rpx;
}

.search-result-empty .text{
    display: block;
    width: 100%;
    height: 40rpx;
    font-size: 28rpx;
    text-align: center;
    color: #999;
}