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 历史搜索记录
 清空



 {{item}}

/* 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%;
}

//index.js
Page({
 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") || []
  })
 }
})