微信小程序结合Storage实现搜索历史效果

本文实例为大家分享了微信小程序实现搜索历史效果的具体代码，供大家参考，具体内容如下

实现目标

代码实现

集合wx.setStorageSync()和wx.getStorageSync()这两个同步函数来实现这个功能实际上非常简单。

<!-- wxml --><view class="search-box"> <view class='icon'>  <image src='../../assets/search.png' mode='widthFix'></image>  <!-- 使用bindinput属性绑定getSearchKey函数获取input组件中的值-->  <!-- 使用bindblur属性绑定routeToSearchResPage函数处理input失去焦点事件-->  <input placeholder='搜索你想购买的商品' bindinput='getSearchKey' bindblur='routeToSearchResPage'></input> </view> <text>取消</text></view><view class='options'> <text>历史搜索记录</text> <text bindtap='clearHistory'>清空</text></view><view class='options'><!-- 遍历 history 数组 --> <text class='item' wx:for='{{history}}' data-index='{{index}}' bindtap='routeToSearchResPage'>{{item}}</text></view>

样式表 可无视

/* wxss */.search-box { background-color: #142341; overflow: hidden; padding: 3%;}.search-box .icon { width: 80%; padding-left: 2%; background-color: #fff; float: left; border-radius: 1rem;}.search-box .icon image { width: 1rem; height: 1rem; display: block; margin: 0.5rem 0; float: left;}.search-box input { display: block; font-size: 0.8rem; height: 2rem; line-height: 2rem; float: left; margin-left: 5%;}.search-box text { width: 18%; float: left; color: #fff; line-height: 2rem; text-align: center; font-size: 0.8rem;}.options { width: 94%; margin: 3%; font-size: 0.8rem; color: #999;}.options text:last-child { color: #1268bb; float: right;}.options .item { padding: 0.2rem 0.5rem; background-color: #eee; float: left !important; color: #565656 !important; border-radius: 0.1rem; margin: 3%;}

JavaScript

//index.jsPage({ data: {  searchKey: "",  history: [] }, //获取input文本 getSearchKey: function(e) {  this.setData({   searchKey: e.detail.value  }) }, // 清空page对象data的history数组 重置缓存为[] clearHistory: function() {  this.setData({   history: []  })  wx.setStorageSync("history", []) }, // input失去焦点函数 routeToSearchResPage: function(e) {  //对历史记录的点击事件 已忽略  let _this = this;  let _searchKey = this.data.searchKey;  if (!this.data.searchKey) {   return  }  let history = wx.getStorageSync("history") || [];  history.push(this.data.searchKey)  wx.setStorageSync("history", history); }, //每次显示钩子函数都去读一次本地storage onShow: function() {  this.setData({   history: wx.getStorageSync("history") || []  }) }})