diff --git a/media/com_jedchecker/js/script.js b/media/com_jedchecker/js/script.js
index f5ce430..8f7b4a9 100644
--- a/media/com_jedchecker/js/script.js
+++ b/media/com_jedchecker/js/script.js
@@ -1,92 +1,98 @@
-function add_validation() {
-	// Fetch all the forms we want to apply custom Bootstrap validation styles to
-	var forms = document.getElementsByClassName('needs-validation');
-	// Loop over them and prevent submission
-	var validation = Array.prototype.filter.call(forms, function(form) {
-		form.addEventListener('submit', function(event) {
-			if (form.checkValidity() === false) {
-				event.preventDefault();
-				event.stopPropagation();
-			}
-			form.classList.add('was-validated');
-		}, false);
-	});
-}
-
-function check(url, rule) {
-	jQuery.ajax({
-		url: url + 'index.php?option=com_jedchecker&task=police.check&format=raw&rule='+rule,
-		method: 'GET',
-		success: function(result){
-			var sidebar = jQuery('#jed-' + rule);
-			var target = jQuery('#police-check-result-' + rule);
-
-			target.html(result);
-
-			var error = target.find('.alert-danger').length;
-			sidebar.find('.badge.bg-danger').text(error || '');
-
-			var warning = target.find('.alert-warning').length;
-			sidebar.find('.badge.bg-warning').text(warning || '');
-
-			var compat = target.find('.alert-secondary').length;
-			sidebar.find('.badge.bg-secondary').text(compat || '');
-
-			var info = target.find('.alert-info').length;
-			sidebar.find('.badge.bg-info').text(info || '');
-
-			var success = target.find('.alert-success').length;
-			sidebar.find('.badge.bg-success').toggleClass('hidden', !success);
-
-			sidebar.find('.spinner-border').addClass('hidden');
-		},
-		error: function(xhr, status){
-			var sidebar = jQuery('#jed-' + rule);
-			var target = jQuery('#police-check-result-' + rule);
-
-			target.html('<span class="text-danger"><b>' + status + ':</b> ' + xhr.status + ' ' + xhr.statusText + '</span>');
-
-			sidebar.find('.badge.bg-danger').text('?');
-			sidebar.find('.badge.bg-warning,.badge.bg-secondary,.badge.bg-info').text('');
-			sidebar.find('.badge.bg-success').addClass('hidden');
-
-			sidebar.find('.spinner-border').addClass('hidden');
-		}
-	});
-}
-
-var jed_collapse_init = false;
-Joomla.submitbutton = function (task) {
-	if (task == 'check') {
-		jQuery(".jedchecker-results").removeClass("hidden");
-		jQuery('.jedchecker-results .badge:not(.bg-success)').html('');
-		jQuery('.jedchecker-results .badge.bg-success').addClass('hidden');
-		jQuery('.jedchecker-results .spinner-border').removeClass('hidden');
-		jQuery('.police-check-result').html('<div class="text-center text-info"><span class="spinner-border"></span></div>');
-
-		if (!jed_collapse_init) {
-			jQuery(".card-header[data-bs-toggle]")
-				.addClass("accordion-button collapsed")
-				.each(function () {
-					var $this = jQuery(this);
-					$this.attr('href', $this.attr('data-href'));
-				});
-
-			new bootstrap.Collapse(document.getElementById('jedchecker-welcome'));
-			new bootstrap.Collapse(document.getElementById('jedchecker-contributors'));
-
-			jed_collapse_init = true;
-		}
-
-		for (index = 0; index < jed_options["rules"].length; ++index) {
-			check(jed_options["url"], jed_options["rules"][index]);
-		}
-
-	} else {
-		Joomla.submitform(task);
+(() => {
+	const jsonDataElement = document.getElementById('jed-rules-json');
+	if (!jsonDataElement) {
+		thrown new Error('Initialization data is missing');
+	}
+	let jedOptions;
+	try {
+		jedOptions = JSON.parse(jsonDataElement.innerHTML);
+	} catch (e) {
+		thrown new Error('Initialization data is missing');
+	}
+
+	if (!jedOptions) thrown new Error('Initialization data is missing');
+
+	const add_validation = () => {
+		// Loop over them and prevent submission
+	  [...document.querySelectorAll('.needs-validation')].forEach((form) => {
+			form.addEventListener('submit', (event) => {
+	      const form = event.target;
+				if (form.checkValidity() === false) {
+					event.preventDefault();
+					event.stopPropagation();
+				}
+				form.classList.add('was-validated');
+			}, false);
+	  });
+	}
+
+	function check(url, rule) {
+	  fetch(`${url}index.php?option=com_jedchecker&task=police.check&format=raw&rule=${rule}`)
+	    .then(response => response.text())
+	    .then(data => {
+	      const sidebar = document.querySelector(`#jed-${rule}`);
+				const target = document.querySelector(`#police-check-result-${rule}`);
+
+				target.innerHTML = data;
+
+				const error = [...target.querySelectorAll('.alert-danger')].length;
+				[...sidebar.querySelectorAll('.badge.bg-danger')].map(el => el.textContent = error || '');
+
+				const warning = [...target.querySelectorAll('.alert-warning')].length;
+	      [...sidebar.querySelectorAll('.badge.bg-warning')].map(el => el.textContent = warning || '');
+
+				const compat = [...target.querySelectorAll('.alert-secondary')].length;
+	      [...sidebar.querySelectorAll('.badge.bg-secondary')].map(el => el.textContent = compat || '');
+
+				var info = [...target.querySelectorAll('.alert-info')].length;
+	      [...sidebar.querySelectorAll('.badge.bg-info')].map(el => el.textContent = info || '');
+
+				var success = [...target.querySelectorAll('.alert-success')].length;
+	      [...sidebar.querySelectorAll('.badge.bg-info')].map(el => el.classList.toggle('hidden', !success));
+
+	      [...sidebar.querySelectorAll('.badge.bg-border')].map(el => el.classList.add('hidden'));
+	    })
+	    .catch(error => {
+	      console.log(error);
+	      const sidebar = document.querySelector(`#jed-${rule}`);
+				const target = document.querySelector(`#police-check-result-${rule}`);
+
+				target.innerHTML = `<span class="text-danger"><b>${error.status}:</b> ${xhr.status} ${xhr.statusText}</span>`;
+
+	      [...sidebar.querySelectorAll('.badge.bg-danger')].map(el => el.textContent = '?');
+	      [...sidebar.querySelectorAll('.badge.bg-danger, .badge.bg-secondary, .badge.bg-info')].map(el => el.textContent = '');
+	      [...sidebar.querySelectorAll('.badge.bg-success, .spinner-border')].map(el => el.addClass('hidden'));
+	    });
+	}
+
+	let jed_collapse_init = false;
+	Joomla.submitbutton = function (task) {
+		if (task == 'check') {
+			[...document.querySelectorAll(".jedchecker-results")].map((el) => el.removeClass("hidden"));
+			[...document.querySelectorAll('.jedchecker-results .badge:not(.bg-success)')].map((el) => el.innerHTML = '');
+			[...document.querySelectorAll('.jedchecker-results .badge.bg-success')].map((el) => el.addClass('hidden'));
+			[...document.querySelectorAll('.jedchecker-results .spinner-border')].map((el) => el.removeClass('hidden'));
+			[...document.querySelectorAll('.police-check-result')].map((el) => el.innerHTML = '<div class="text-center text-info"><span class="spinner-border"></span></div>');
+
+			if (!jed_collapse_init) {
+				[...document.querySelectorAll(".card-header[data-bs-toggle]")].forEach((el) => {
+		el.addClass("accordion-button collapsed");
+					el.setAttribute('href', el.dataset.href);
+	      });
+
+	      new bootstrap.Collapse(document.getElementById('jedchecker-welcome'));
+	      new bootstrap.Collapse(document.getElementById('jedchecker-contributors'));
+
+	      jed_collapse_init = true;
+			}
+
+	    jedOptions["rules"].forEach((rule) => {
+	      check(jedOptions["url"], rule);
+	    });
+		} else {
+			Joomla.submitform(task);
+		}
 	}
-}
 
-jQuery(document).ready(function() {
 	new bootstrap.Tooltip(document.getElementById('jedchecker'), {container: 'body', selector: '[data-bs-toggle=tooltip]'});
-});
+})();