Improve emoji detection in containsEmoji function

Author: abdulrahmanelnory1

src/main/webapp/myAccount.jsp

@@ -337,8 +337,14 @@ java.io.*" %>
 
 	<script>
 		function containsEmoji(text) {
-			var emojiRegex = /[\u{1F600}-\u{1F64F}]|[\u{1F300}-\u{1F5FF}]|[\u{1F680}-\u{1F6FF}]|[\u{1F1E0}-\u{1F1FF}]|[\u{2600}-\u{26FF}]|[\u{2700}-\u{27BF}]|[\u{1F900}-\u{1F9FF}]|[\u{1FA70}-\u{1FAFF}]|[\u{FE00}-\u{FE0F}]|[\u{1F018}-\u{1F270}]|[\u{238C}-\u{2454}]|[\u{20D0}-\u{20FF}]/gu;
-			return emojiRegex.test(text);
+			try {
+				var emojiRegex = /\p{Emoji}/gu;
+				return emojiRegex.test(text);
+			} catch (e) {
+				// for older browsers that don't support \p{Emoji}
+				var fallbackRegex = /[\u{1F600}-\u{1F64F}]|[\u{1F300}-\u{1F5FF}]|[\u{1F680}-\u{1F6FF}]|[\u{1F1E0}-\u{1F1FF}]|[\u{2600}-\u{26FF}]|[\u{2700}-\u{27BF}]|[\u{1F900}-\u{1F9FF}]|[\u{1FA70}-\u{1FAFF}]|[\u{FE00}-\u{FE0F}]|[\u{1F018}-\u{1F270}]|[\u{238C}-\u{2454}]|[\u{20D0}-\u{20FF}]/gu;
+				return fallbackRegex.test(text);
+			}
 		}
 
 		function sendButtonClicked() {