Remove jquery from setDirLabel.

app/www/index.html

@@ -356,13 +356,14 @@
 	};
 
 	var setDirLabel = function (dir) {
-		'use strict';
+		const bwdLabel = document.getElementById('bwdLabel');
+		const fwdLabel = document.getElementById('fwdLabel');
 		if (dir) {
-			$('#bwdLabel').removeClass();
-			$('#fwdLabel').addClass('selected');
+			bwdLabel.classList.remove('selected')
+			fwdLabel.classList.add('selected')
 		} else {
-			$('#fwdLabel').removeClass();
-			$('#bwdLabel').addClass('selected');
+			fwdLabel.classList.remove('selected')
+			bwdLabel.classList.add('selected')
 		}
 	};
 	var incCounter = function (val) {
@@ -389,7 +390,8 @@
 	};
 </script>
 <script>
-	var web = {};
+	'use strict'
+	const web = {};
 	web.frame = function () {
 		$.ajax({
 			method : 'POST',
@@ -408,7 +410,7 @@
 		}
 	};
 	web.setDir = function () {
-		var dir = !document.getElementById('dir').checked;
+		const dir = !document.getElementById('dir').checked;
 		/*$.ajax({
 			method : 'POST',
 			url : '/dir',
@@ -417,20 +419,18 @@
 			dataType : 'json',
 			success : web.setDirSuccess
 		});*/
-		var opts = {
+		const opts = {
 			method : 'POST',
 			body : { dir : dir}
 		};
 		fetch('/dir', opts).then(web.setDirSuccess);
 	};
 	web.setDirSuccess = function (res) {
-		'use strict';
 		STATE.dir = res.dir;
 		setDirLabel(res.dir);
 		console.log('setDir to ' + res.dir);
 	};
 	web.getState = function () {
-		'use strict';
 		$.ajax({
 			method : 'GET',
 			url : '/status',
@@ -438,7 +438,6 @@
 		});
 	};
 	web.getStateSuccess = function (res) {
-		'use strict';
 		var exposure;
 		var scale;
 		if (res.frame.dir !== true) {
@@ -479,7 +478,6 @@
 
 	};
 	web.setExposureSuccess = function (res) {
-		'use strict';
 		var exposure;
 		if (res.exposure < BOLEX.expected) {
 			res.exposure = BOLEX.expected;