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// Important, give your form a unique ID and assign that value // to FORM_ID below // Wrap your checkboxes in a div and give that div a unique ID // and assign it to GROUP_ID below document.addEventListener("DOMContentLoaded", function() { // Define constants for form ID and checkbox group ID const FORM_ID = "Contactform"; const GROUP_ID = "chkGroup"; // Get the form element by its ID var form = document.getElementById(FORM_ID); // Attach the submit event listener to the form form.addEventListener("submit", function(e) { // Get all checkboxes within the div with ID chkGroup var checkboxes = document.querySelectorAll(`#${GROUP_ID} input[type='checkbox']`); var checked = 0; // Loop through checkboxes to count the checked ones checkboxes.forEach(function(checkbox) { if (checkbox.checked) { checked++; } }); // If no checkboxes are checked, show an alert and prevent form submission if (checked < 1) { alert("Please select at least one checkbox."); e.preventDefault(); // Prevent form from submitting } }); });

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