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小程式中搜索文字高亮顯示

小程式對解析標籤字串不友好,有時候要處理一些搜尋內容、關鍵字、段落中高亮展示檢索到的匹配文字就會比較麻煩。

[HTML] 

<view class="section">
    <view class="view-search">
        <input class="view-search-input" value="{{keyName}}" placeholder="輸入搜尋關鍵詞" bindinput="bindInput" maxlength="11" />
    </view>
    <scroll-view class
="scrollView" scroll-y> <view wx:for="{{searchDataList}}" wx:key="*this"> <view class='oneText'> <text wx:for="{{item.text}}" wx:key="{{index}}" class="{{item == keyName ? 'searchHigh' : '' }}">{{item}}</text> </view> </view> </scroll-view> </view>

 

[CSS] 

.view-search {
  padding: 12rpx 30rpx;
  box-sizing: border-box;
  position: relative;
}
.view-search-input {
  height: 70rpx;
  line-height: 70rpx;
  border: 2rpx solid #ccc;
  border-radius: 10rpx;
  box-sizing: border-box;
  padding: 0px 70rpx 0px 20rpx;
  font-size: 32rpx;
}
 
.searchHigh {
  color: #409eff;
}
 
.scrollView {
    height: 80vh;
    background
-color: #F5F5F5; box-sizing: border-box; } .oneText { line-height: 50rpx; margin: 30rpx; text-align: center; color: #9B9B9B; font-size: 32rpx; } .currentText { color: #0099FF; }

 

[JavaScript]

const app = getApp();
const getInf = (str, key) => str.replace(new RegExp(`${key}`, 'g'), `%%${key}%%`).split('%%');

Page({
  data: {
    keyName: null,
    primaryListData: [
      { "id": "1", "text": "挺不錯的小老弟" },
      { "id": "2", "text": "是的,挺不錯" },
    ], // 內容原始陣列 (如果是後臺請求的資料,就不需要兩個陣列了))
    searchDataList: [
      { "id": "1", "text": "挺不錯的小老弟" },
      { "id": "2", "text": "是的,挺不錯" },
    ], // 用來搜尋的複製陣列
  },

  // 輸入框正在輸入
  bindInput: function (e) {
    var that = this;
    that.setData({
      keyName: that.trim(e.detail.value)
    })
    that.searchTap();
  },

  // 搜尋關鍵字
  searchTap: function () {
    var that = this;
    var data = that.data.primaryListData;
    var newData = that.data.searchDataList;
    for (var i = 0; i < data.length; i++) {
      var dic = data[i];
      var newDic = newData[i];
      var text = dic["text"];
      newDic["text"] = getInf(text, that.data.keyName);
    }
    that.setData({
      searchDataList: newData,
    })
  },
  // 去除首尾的空格
  trim: function (s) {
    return s.replace(/(^\s*)|(\s*$)/g, "");
  },

  onLoad: function (e) { },
})