JS refactoring - Fist version

js_refactor_first_version.js

var MyApp = {};

MyApp.Base = {
  getFixedVal: function(){
    //Javascript code before refactoring
    var myDataVal = someCalculationHere();
    var amount =  someInputFieldValue;
    var fixedVal = 0;
    if(myDataVal > 12){
      if(0 < amount && amount <= 12000){
        if(calculatedVal <= 95){
          fixedVal = 0.8;
        }else{
          fixedVal = 0.7;
        }
      }else{
        if(calculatedVal <= 95){
          fixedVal = 1.0;
        }else{
          fixedVal = 1.1;
        }
      }
    } else if(0 < myDataVal && myDataVal < 12) {
      if(0 < amount && amount <= 12000){
        if(calculatedVal <= 90){
          fixedVal = 0.4;
        }else{
          fixedVal = 0.7;
        }
      }else{
        if(calculatedVal <= 78){
          fixedVal = 0.4;
        }else if(calculatedVal >= 78.01 && calculatedVal <= 90){
          fixedVal = 0.7;
        }else if(calculatedVal > 90){
          fixedVal = 0.9;
        }
      }
    }
    return fixedVal;
  }
};