JS Refactoring - Final version

js_refactor_final_version.js

// Final code
var MayApp = {};
MyApp.Base = { 
  data: { 
    rules: {
      FirstSet:{ 
        "0-12": { 
          "0-12000":{ 
            "0-90" :{ 
              fixedVal: 0.4 
            }, 
            "91-*" :{ 
              fixedVal: 0.7 
            } 
          }, 
          "12001-*":{ 
            "0-78" :{ 
              fixedVal: 0.4 
            }, 
            "78.01-90" :{ 
              fixedVal: 0.7 
            }, 
            "91-*" :{ 
              fixedVal: 0.9
            } 
          } 
        }, 
        "13-*": { 
          "0-12000":{ 
            "0-95" :{ 
              fixedVal: 0.8 
            }, 
            "96-*" :{ 
              fixedVal: 0.7 
            } 
          }, 
          "12001-*":{ 
            "0-95" :{ 
              fixedVal: 1.0 
            }, 
            "96-*" :{ 
              fixedVal: 1.1 
            } 
          } 
        } 
      }
    }
  }, 
  _isDataRangeMatches: function(dataVal,dataRange){
    if(dataRange[1] == '*'){
      return (dataVal >= parseInt(dataRange[0]));
    } else {
      return (dataVal >= parseInt(dataRange[0]) && dataVal <= parseInt(dataRange[1]));
    }
  },
  _enumerateFirstSetRules: function(dataValArr,jsonData){
    var dataVal = dataValArr.pop();
    for (var key in jsonData){
      if(jsonData.hasOwnProperty(key) && key != 'fixedVal'){
        var keyRange = key.split('-');
        if(this._isDataRangeMatches(dataVal,keyRange)){
          if(jsonData.hasOwnProperty('fixedVal')){
            return jsonData.fixedVal;
          }else{
            return this._enumerateFirstSetRules(dataValArr, jsonData[key]);  
          }
        }
      }else if(jsonData.hasOwnProperty('fixedVal')){
        return jsonData.fixedVal;
      } 
    }
  },
  getFixedVal: function(myDataVal, amount, calculatedVal){ 
    var rulesData = MyApp.Base.data.rules.FirstSet; 
    return this._enumerateFirstSetRules([calculatedVal,amount,myDataVal], rulesData);
  }
};