UOS DTS Grade Calculator

JavaScript logic

const degreeCalculator = () => {

    const getData = data => parseInt(document.getElementById(data).value)

    const introductionToRelationalDatabases = (getData("introductionToRelationalDatabases1") + getData("introductionToRelationalDatabases2")) / 2
    const advancedNetworkingConcepts = getData("advancedNetworkingConcepts")
    const dataStructuresAlgorithmsAndAdvancedProgramming = getData("dataStructuresAlgorithmsAndAdvancedProgramming")
    const researchSkills = getData("researchSkills")
    const softwareDesignDevelopmentAndEngineering = (getData("softwareDesignDevelopmentAndEngineering1") + (getData("softwareDesignDevelopmentAndEngineering2") * 3)) / 4            
    const multimediaMobileAndInternet = getData("multimediaMobileAndInternet")
    const distributedSystems = getData("distributedSystems")
    const informationEngineering = getData("informationEngineering")
    const cyberSecurityAttack = getData("cyberSecurityAttack")
    const cyberSecurityDefence = getData("cyberSecurityDefence")
    const emergentTechnologies = getData("emergentTechnologies")
    const synopticProject = getData("synopticProject")
    
    const levelFiveOverall = (
        [introductionToRelationalDatabases, advancedNetworkingConcepts, dataStructuresAlgorithmsAndAdvancedProgramming, researchSkills, softwareDesignDevelopmentAndEngineering, multimediaMobileAndInternet]
            .sort((a,b)=>b-a)
            .splice(0,5)
            .reduce((partialSum, a) => partialSum + a, 0)
    ) / 5

    const levelSixOverall = (
        ([distributedSystems, cyberSecurityDefence, informationEngineering, cyberSecurityAttack]
            .sort((a,b)=>b-a)
            .splice(0,3)
            .reduce((partialSum, a) => partialSum + a, 0)
        ) + ((((synopticProject * 3) + emergentTechnologies) / 4) * 2)
    ) / 5

    const degreeType = percentage => {
        if (percentage >= 70) return "1st"
        else if (percentage >= 60) return "2:1"
        else if (percentage >= 50) return "2:2"
        else if (percentage >= 40) return "3rd"
        else return "failed degree"
    }

    const overallMark = Math.round((((levelFiveOverall * 4) + (levelSixOverall * 6)) / 10))
    
    if (isNaN(overallMark)) document.getElementById("output").innerHTML = "Make sure all grade fields are filled out before calculating."
    else document.getElementById("output").innerHTML = "You're calculated degree is " + overallMark + "%, which would be a " + degreeType(overallMark)
}