kompass/modules/event-participants/Templates/register-form.php

<form id="registration_form" method="post" action="{{URL}}" onsubmit="return validationCheck()">
    <input type="hidden" name="eventId" value="{{eventId}}" />
    <div class="step" id="step1">
        {{altersstufe}}
    </div>

    <div class="step" id="step2">
        <h3>Persönliche Daten (Eltern)</h3>
        {{persönliche daten eltern}}
    </div>

    <div class="step" id="step3">
        <h3>Persönliche Daten (Teili)</h3>
        {{persönliche daten}}
    </div>

    <div class="step" id="step4">
        <h3>Deine Teilnahme</h3>
        {{gruppe}}
    </div>

    <div class="step" id="step5">
        <h3>An- und Abreise</h3>
        {{anreise}}
    </div>

    <div class="step" id="step6">
        <h3>Beitrag</h3>
        {{beitrag}}
    </div>

    <div class="step" id="step7">
        <h3>Foto-Erlaubnis</h3>
        {{fotoerlaubnis}}
    </div>

    <div class="step" id="step8">
        <h3>Besondere Merkmale</h3>
        {{allergien}}
    </div>


</form>

<style>
    .step h3 {
        margin-bottom: 30px;
        display: block;
    }

    table {
        margin: auto;
        width: 95%;
    }

    #registration_form {
        color: #000000;
        padding: 10px;
    }

    #registration_form input[type=button],
    #registration_form input[type=submit]
    {
        background-color: #ffffff;
        width: 125px;
        padding: 10px;
        border-style: solid;
        border-color: #f0f0f0;
        cursor: pointer;
        border-width: 1px;
        margin-top: 25px;
    }

    #registration_form input[type="button"]:hover,
    #registration_form input[type="submit"]:hover
    {
        color: #ffffff;
        background-color: #394993;
    }

    #registration_form table {
        width: 100%;
        color: #757575;
    }

    #registration_form table td:nth-child(1) {
        padding-right: 10px;
    }

    #registration_form table td:nth-child(2){
        width: 80%;
        padding-right: 10px;
    }
    #registration_form table td {

    }

    #registration_form table td input,
    #registration_form table td select,
    #registration_form table td textarea
    {

        width: 350px;
        background-color: #ffffff;
        border-color: #c0c0c0;
        border-width: 1px;
        border-style: solid;
        border-radius: 5px;
        font-size: 14pt;
        padding: 5px;
        margin-bottom: 10px;
    }

    #registration_form label
    {
        font-size: 12pt;
        cursor: pointer;
    }

    #registration_form table td select {
        width: 363px;
    }

    .emblems_selection {
        widh: 100%;
        margin-top: 50px;
        text-align: center;
        padding: 5px 0;
        border-style: solid none none;
        border-width: 1px;
        border-color: #c0c0c0;
    }

    .altersstufe_td {
        display: inline-block;
        box-shadow: 5px 5px 10px #c0c0c0;
        background-color: #f9f9f9;
        padding: 0;
        cursor: pointer;
        margin-right: 20px;
        width: 46%;
    }

    .altersstufe_td div
    {
        height: 50px;
        padding: 0px 10px !important;
    }

    .dsgvo_error {
        color: #a94442;
    }

    @media screen and (max-width: 768px) {
        .altersstufe_td {
            display: block;
            margin: 0 auto 25px;
            width: 95%;
        }

        #registration_form table td input,
        #registration_form table td select,
        #registration_form table td textarea
        {
            width: 100%;
        }

        #strasse {
            width: 70% !important;
        }

        #ort {
            width: 608% !important;
        }
    }


</style>

<script>
    let currentStep = 1;
    const form = document.getElementById('multi-step-form');
    const steps = document.querySelectorAll('.step');

    function checkAnsprechpartner() {
        var errors = false;

        var ids = ['ansprechpartner', 'telefon_2','email_2'];

        for (var idx = 0; idx < ids.length; idx++) {
            var currentElement = ids[idx];

            if (document.getElementById(currentElement).value == '') {
                document.getElementById(currentElement).style.backgroundColor = "#fd9393";
                document.getElementById(currentElement).style.color = "red";
                errors = true;
            } else {
                document.getElementById(currentElement).style.backgroundColor = "#ffffff";
                document.getElementById(currentElement).style.color = "#c0c0c0";
            }
        }

        if (!errors) {
            showStep(3);
        }
    }

    function checkAnreise() {
        var errors = false;

        var ids = ['anreise', 'abreise'];

        for (var idx = 0; idx < ids.length; idx++) {
            var currentElement = ids[idx];

            if (document.getElementById(currentElement).value == '') {
                document.getElementById(currentElement).style.backgroundColor = "#fd9393";
                document.getElementById(currentElement).style.color = "red";
                errors = true;
            } else {
                document.getElementById(currentElement).style.backgroundColor = "#ffffff";
                document.getElementById(currentElement).style.color = "#c0c0c0";
            }
        }

        if (errors)
            return;

        var anreise = new Date(document.getElementById('anreise').value);
        var abreise = new Date(document.getElementById('abreise').value);

        if(abreise < anreise) {
            document.getElementById('anreise').style.backgroundColor = "#fd9393";
            document.getElementById('anreise').style.color = "red";
            document.getElementById('abreise').style.backgroundColor = "#fd9393";
            document.getElementById('abreise').style.color = "red";
            return;
        }


        if(anreise < new Date('{{startdate}}')) {
            document.getElementById('anreise').style.backgroundColor = "#fd9393";
            document.getElementById('anreise').style.color = "red";
            errors = true;
        } else {
            document.getElementById('anreise').style.backgroundColor = "#ffffff";
            document.getElementById('anreise').style.color = "#c0c0c0";
        }

        if(abreise > new Date('{{enddate}}')) {
            document.getElementById('abreise').style.backgroundColor = "#fd9393";
            document.getElementById('abreise').style.color = "red";
            errors = true;
        } else {
            document.getElementById('abreise').style.backgroundColor = "#ffffff";
            document.getElementById('abreise').style.color = "#c0c0c0";
        }

        if (!errors) {
            showStep(6);
        }
    }


    function checkAddress() {
        var errors = false;

        var ids = ['vorname', 'nachname','geburtsdatum', 'telefon_1', 'email_1', 'strasse', 'hausnummer', 'plz', 'ort'];

        for (var idx = 0; idx < ids.length; idx++) {
            var currentElement = ids[idx];

            if (document.getElementById(currentElement).value == '') {
                document.getElementById(currentElement).style.backgroundColor = "#fd9393";
                document.getElementById(currentElement).style.color = "red";
                errors = true;
            } else {
                document.getElementById(currentElement).style.backgroundColor = "#ffffff";
                document.getElementById(currentElement).style.color = "#c0c0c0";
            }
        }

        if (!errors) {
            showStep(4);
        }
    }


    function showStep(stepNumber) {
        steps.forEach(step => step.style.display = 'none');
        document.getElementById(`step${stepNumber}`).style.display = 'block';
    }

    function nextStep() {
        if (currentStep < steps.length) {
            currentStep++;
            showStep(currentStep);
        }
    }

    function validationCheck()
    {
        if (!document.getElementById('dsgvo_accept').checked) {
            document.getElementById('dsgvo_text').classList.add('dsgvo_error');
        }
        var ids = ['vorname', 'nachname','geburtsdatum', 'telefon_1', 'email_1', 'anreise', 'abreise', 'strasse', 'hausnummer', 'plz', 'ort'];

        for (var idx = 0; idx < ids.length; idx++) {
            var currentElement = ids[idx];
            if (document.getElementById(currentElement).value == '') {
                return false;
            }
        }

        var anreise = new Date(document.getElementById('anreise').value);
        var abreise = new Date(document.getElementById('abreise').value);

        if(anreise < new Date('{{startdate}}')) {
            return false;
        }

        if(abreise > new Date('{{enddate}}')) {
            return false;
        }

        if (!document.getElementById('dsgvo_accept').checked) {
            document.getElementById('dsgvo_text').classList.add('dsgvo_error');
        }

        return document.getElementById('dsgvo_accept').checked;


    }

    showStep(currentStep);
</script>