Add BS and VT char escape sequences to JavaScriptUtils

Issue: SPR-9983

spring-web/src/main/java/org/springframework/web/util/JavaScriptUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008 the original author or authors.
+ * Copyright 2002-2013 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,21 +21,21 @@ package org.springframework.web.util;
  * Escapes based on the JavaScript 1.5 recommendation.
  *
  * <p>Reference:
- * <a href="http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Guide:Literals#String_Literals">
- * Core JavaScript 1.5 Guide
- * </a>
+ * <a href="https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Values,_variables,_and_literals#String_literals">
+ * JavaScript Guide</a> on Mozilla Developer Network.
  *
  * @author Juergen Hoeller
  * @author Rob Harrop
+ * @author Rossen Stoyanchev
  * @since 1.1.1
  */
 public class JavaScriptUtils {
 
 	/**
-	 * Turn special characters into escaped characters conforming to JavaScript.
-	 * Handles complete character set defined in HTML 4.01 recommendation.
+	 * Turn JavaScript special characters into escaped characters.
+	 *
 	 * @param input the input string
-	 * @return the escaped string
+	 * @return the string with escaped characters
 	 */
 	public static String javaScriptEscape(String input) {
 		if (input == null) {
@@ -73,6 +73,13 @@ public class JavaScriptUtils {
 			else if (c == '\f') {
 				filtered.append("\\f");
 			}
+			else if (c == '\b') {
+				filtered.append("\\b");
+			}
+			// No '\v' in Java, use octal value for VT ascii char
+			else if (c == '\013') {
+				filtered.append("\\v");
+			}
 			else {
 				filtered.append(c);
 			}