add "share" link

server/scripts/modules/share.mjs

@@ -0,0 +1,40 @@
+document.addEventListener('DOMContentLoaded', () => init());
+
+const init = () => {
+	// add action to existing link
+	document.querySelector('#share-link').addEventListener('click', createLink);
+};
+
+const createLink = (e) => {
+	// cancel default event (click on hyperlink)
+	e.preventDefault();
+	// get all checkboxes on page
+	const checkboxes = document.querySelectorAll('input[type=checkbox]');
+
+	// list to receive checkbox statuses
+	const queryStringElements = {};
+
+	[...checkboxes].forEach((elem) => {
+		if (elem?.id) {
+			queryStringElements[elem.id] = elem?.checked ?? false;
+		}
+	});
+
+	// add the location string
+	queryStringElements.txtAddress = document.querySelector('#txtAddress')?.value ?? '';
+
+	const queryString = (new URLSearchParams(queryStringElements)).toString();
+
+	const url = new URL(`?${queryString}`, document.location.href);
+
+	console.log(queryStringElements);
+	console.log(queryString);
+	console.log(url.toString());
+};
+
+const readLink = false;
+
+export {
+	createLink,
+	readLink,
+};