How to make global search code highlighting reminder in WeChat applet

This time I will show you how to make a global search code highlighting reminder in the WeChat applet. What are the precautions?What are the following? This is a practical case, let’s take a look at it.

Requirements

When I was working on a WeChat applet recently, I needed to achieve global matching and highlight effects when entering content in the search box. The current idea is , recursively return the data in the background, and replace the value of the object with the required dom node, and achieve the highlighting effect through rich-text.

Code

wxml:

<view>
  <input>
  <view>
    <rich-text></rich-text>  
    <rich-text></rich-text>  
    <rich-text></rich-text>
    <view>
      <rich-text></rich-text>  
    </view>
  </view>
</view>

js:

//index.js
const app = getApp()
Page({
  data: {
    json: [{ name: 'eiolewkfp', age: 'awdqwwdk', address: 'aueifwhefwfheffoewjowef',aihao:['sdsd','sdfsd','sdsf']}, { name: '98797', age: '6544656', address: '65494364' }], // 可以是任何类型的数据
    newJson: '',
    tempText:''
  },
  onLoad: function (options) {
    this.setData({
      newJson:this.data.json
    })
  },
  digui: function (newJson,obj,key) { // 递归方法，来遍历最内层的字符串并通过正则来替换
    var that = this;
    var reg = new RegExp(that.data.tempText,'g');
    if (newJson.constructor == Array) { 
      newJson.forEach(function (item,index) {
        if (item.constructor == String){
          obj[key].splice(index, 1, item.replace(reg, "<span>" + that.data.tempText + "</span>"))
        }else{
          that.digui(item, newJson);
        }
      });
    } else if (newJson.constructor == Object) {
      var json = {};
      for (var key in newJson) {
        json[key] = newJson;
        that.digui(newJson[key],newJson,key);
      }
    } else if (newJson.constructor == String) { // 这里做全局替换
      if(key){
        obj[key] = newJson.replace(reg, "<span>" + that.data.tempText + "</span>")
      }
    }
  },
  bindKeyInput: function (e) { // 每次输入来监听键盘，处理匹配的数据
    var text = e.detail.value;
    this.setData({
      tempText:text
    })
    var newJson = JSON.parse(JSON.stringify(this.data.json)); // 实现深复制
    
    this.digui(newJson);
    this.setData({
      newJson:newJson
    })
  }
})

I believe you have mastered the method after reading the case in this article, more Please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of router usage in Angular4

How to implement webpack’s 4.0 packaging optimization

The above is the detailed content of How to make global search code highlighting reminder in WeChat applet. For more information, please follow other related articles on the PHP Chinese website!