regform js

//Education Info Constructor
function EducationInfo() {
    this.educationLevel = ko.observable();
    this.schoolName = ko.observable();
    this.completed = ko.observable();
    this.startDate = ko.observable();
    this.endDate = ko.observable();
};

function LangTesting() {
    this.langTest1 = ko.observable(false);
    this.langTest2 = ko.observable(false);
    this.langTest3 = ko.observable(false);
};

function WorkTesting() {
    this.jobOffer = ko.observable(false);
    this.collegeOfTrades = ko.observable();
    this.canadaApprenticeProcess = ko.observable();

    this.choice1 = ko.observable();
    this.choice2 = ko.observable();
    this.choice3 = ko.observable();
    this.choice4 = ko.observable();
};

//Work Info Constructor
function WorkInfo() {
    this.workTitle = ko.observable();
    this.workName = ko.observable();
    this.typeOfWork = ko.observableArray([]);
    this.yearsExp = ko.observable();
    this.countryOfEmployment = ko.observable();
    this.jobOffer = ko.observable();

};

//User Constructor
function User() {
    this.firstName = ko.observable();
    this.lastName = ko.observable();
    this.email = ko.observable();
    this.skype = ko.observable();
    this.birthday = ko.observable();
    this.preferredLanguage = ko.observable();
    this.tradeInterest = ko.observable();
    this.consentRegistration = ko.observable();
    this.approvedImmigrate = ko.observable();
    this.originCountry = ko.observable();
    this.immigrateOntario = ko.observable();
    this.livingOutsideCanada = ko.observable();
    this.tradesKnowledge = ko.observable();
    this.referal = ko.observable();
    this.username = ko.observable();
    this.password = ko.observable();
    this.uciNumber = ko.observable();
    this.gender = ko.observable();
    this.immigrationStatus = ko.observable();
    this.consentResearch = ko.observable();
    this.driversLicense = ko.observable();
    this.englishTesting = ko.observable(new LangTesting());
    this.frenchTesting = ko.observable(new LangTesting());
    this.workTesting = ko.observable(new WorkTesting());

    this.id = ko.observable();
    this.guid = ko.observable();

    this.workHistory = ko.observableArray([]);
    this.educationHistory = ko.observableArray([]);

    this.step = 1;
    this.displayStep1 = ko.observable(true);
    this.displayStep2 = ko.observable(false);
    this.displayStep3 = ko.observable(false);
    this.displayStep4 = ko.observable(false);
    this.displayStep5 = ko.observable(false);
    this.displayStep6 = ko.observable(false);
};

//Main Knockout View Model
var AppViewModel = function () {
    var self = this;
    //Push original objects to history arrays
    self.user = ko.observable(new User());
    self.save = function () {
        console.log(ko.toJSON(self));
    };

    self.addEducationHistory = function () {
        self.user().educationHistory.push(new EducationInfo());
    };

    self.addWorkHistory = function () {
        self.user().workHistory.push(new WorkInfo());
    };

    self.checkDate = function (date) {
        var reg =
        /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2\d|3[01])\/(19|20)\d{2}$/g;
        if (reg.test(date)) {
            return true;
        } else {
            return false;
        }
    }

    self.checkStep1 = function () {
        if (self.user().consentRegistration() !== true || self.user().tradeInterest() == 'Select a trade') {
            alert('Error');
            return false;
        } else {
            alert('Success!');
            self.user().displayStep1(false);
            self.user().displayStep2(true);
        }
    }

    self.checkStep2 = function () {
        if (self.user().approvedImmigrate() !== 'true' || self.user().immigrateOntario() !== 'true' || self.user().livingOutsideCanada() !== 'true' || String(self.user().originCountry()) === 'Other') {
            alert('Error');
            return false;
        } else {
            alert('Success!');
            self.user().displayStep2(false);
            self.user().displayStep3(true);
        }
    }

    self.checkStep3 = function () {
        if (self.user().tradesKnowledge() == undefined || self.user().referal() == 'Select an answer') {
            alert("Error")
            return false;
        } else {
            alert('Success!');
            self.user().displayStep3(false);
            self.user().displayStep4(true);
        }
    }

    self.checkStep4 = function () {
        if (self.user().username() == undefined || self.user().password() == undefined || self.user().firstName() == undefined || self.user().lastName() == undefined || self.user().uciNumber() == undefined || self.user().gender() == undefined || self.user().email() == undefined || self.user().preferredLanguage() == undefined || self.user().immigrationStatus() == undefined || self.user().consentResearch() == undefined) {
            alert("Error")
            return false;
        } else if (self.checkDate(self.user().birthday()) == false) {
            alert("Error")
            return false;
        } else {
            alert('Success!');
            self.user().displayStep4(false);
            self.user().displayStep5(true);
        }
    }

    self.checkStep5 = function () {
        //RegEx for Start/Finished dates in the Education section (must fit MM/DD/YYYY format)
        var allEducationDates = document.querySelectorAll('.educationDates1');
        $.each(allEducationDates, function (index, value) {
            var currentVal = $(this).val();
            if (self.checkDate(currentVal)) {
                alert('Success!');
                self.user().displayStep5(false);
                self.user().displayStep6(true);

            } else {
                alert('Error');
                return false;
            }
        });
    }

    self.checkStep6 = function () {

    }

    self.addEducationHistory();
    self.addWorkHistory();

};
ko.applyBindings(new AppViewModel());

//Check all education level inputs
//If it's value is not 'Select an education level' make start/end dates required