script1.js

const form = document.querySelector('form');
const datetimeElement = document.getElementById('datetime');
const confirmCheckbox = document.getElementById('confirm');
const mobileNumberInput = document.getElementById('Mobile_no');
const pincodeInput = document.getElementById('Pincode');

function updateDateTime() {
    const now = new Date();
    const dayNames = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
    const monthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    let month = monthNames[now.getMonth()] ; 
    let day = dayNames[now.getDay()];
    month=month<10? '0'+month:month;
    let date = now.getDate();
    date=date<10? '0'+date:date;
    const year = now.getFullYear();
    let hours = now.getHours();
    let minutes = now.getMinutes();
    let sec=now.getSeconds();
    const ampm = hours >= 12 ? 'PM' : 'AM';
    hours = hours % 12 || 12;
    minutes = minutes < 10 ? '0' + minutes : minutes;
    seconds=sec<=9? '0'+sec:sec;
    const dateTimeString = day+', '+month+'/'+date+'/'+year+',  '+hours+':'+minutes+':'+seconds+' '+ampm;
    datetimeElement.innerText = dateTimeString;
}

updateDateTime();
setInterval(updateDateTime, 1000);

function isNumeric(value) {
    var flag=1
    for (i=0;i<value.length;i++){
        if(value[i]<'0'|| value[i]>'9' ){
            flag=0;
            break
        }
    } 
    return flag;
}

form.addEventListener('submit', (event) => {
    let isValid = true;

    if (!confirmCheckbox.checked) {
    alert('Please confirm the information is accurate and agree to the event terms and waiver.');
    isValid = false;
    }

    if (!isNumeric(mobileNumberInput.value)) {
        alert('Mobile Number must contain only digits.');
        isValid = false;
    } else if (mobileNumberInput.value.length !== 10) {
        alert('Mobile Number must contain exactly 10 digits.');
        isValid = false;
    }

    if (pincodeInput.value !== '') {
        if (!isNumeric(pincodeInput.value)) {
            alert('Pincode must contain only digits.');
            isValid = false;
        } else if (pincodeInput.value.length !== 6) {
            alert('Pincode must contain exactly 6 digits.');
            isValid = false;
        }
    }

    if (!isValid) {
        event.preventDefault();
    } else {
        alert('Form submitted successfully!');

    }
});