Js多条件分组

Love The Way You Lie 2022-12-15 11:16 115阅读 0赞

单条件

多条件

dataGroupingToArray(array, keyArry, resKey = 'list') {
          if (keyArry.length <= 0) return array
          var aMap = []
          var aResult = []
          for (var i = 0; i < array.length; i++) {
            var item = array[i]
            var repetitionValue = ''
            var repetitionKey = ''
            keyArry.forEach((keyValue) => {
              repetitionKey = repetitionKey + keyValue
              repetitionValue += '' + item[keyValue]
            })
            if (aMap.indexOf(repetitionValue) === -1) {
              //没有重复
              var oItem = {}
              oItem[resKey] = [item]
    
              oItem[repetitionKey] = repetitionValue //item[key] //分组的字段
              aResult.push(oItem)
              aMap.push(repetitionValue)
            } else {
              //重复了
              var index = aMap.indexOf(repetitionValue)
              aResult[index][resKey].push(item)
            }
          }
          return aResult
        },
    
    //调用
    this.dataGroupingToArray(this.list, ['bloodBreedId', 'bloodType'])