Some more fixes related to unicode and escape chars

src/js/Node.js

@@ -984,7 +984,6 @@ Node.prototype._getDomValue = function(silent) {
     try {
       // retrieve the value
       var value;
-      console.log('getValue', this.valueInnerText, this.valueInnerText.length)
       if (this.type == 'string') {
         value = this._unescapeHTML(this.valueInnerText);
       }
@@ -2858,13 +2857,16 @@ Node.prototype._stringCast = function(str) {
  * @private
  */
 Node.prototype._escapeHTML = function (text) {
-  return String(text)
+  var htmlEscaped = String(text)
       .replace(/&/g, '&')    // must be replaced first!
       .replace(/</g, '&lt;')
       .replace(/>/g, '&gt;')
       .replace(/  /g, ' &nbsp;') // replace double space with an nbsp and space
       .replace(/^ /, '&nbsp;')   // space at start
       .replace(/ $/, '&nbsp;');  // space at end
+
+  var json = JSON.stringify(htmlEscaped);
+  return json.substring(1, json.length - 1);
 };
 
 /**
@@ -2874,7 +2876,10 @@ Node.prototype._escapeHTML = function (text) {
  * @private
  */
 Node.prototype._unescapeHTML = function (escapedText) {
-  return this._escapeJSON(escapedText)
+  var json = '"' + this._escapeJSON(escapedText) + '"';
+  var htmlEscaped = util.parse(json);
+
+  return htmlEscaped
       .replace(/&lt;/g, '<')
       .replace(/&gt;/g, '>')
       .replace(/&nbsp;|\u00A0/g, ' ')

test/test_build.html

@@ -45,15 +45,17 @@
     modes: ['code', 'form', 'text', 'tree', 'view'], // allowed modes
     error: function (err) {
       alert(err.toString());
-    }
+    },
+    indentation: 4
   };
 
   json = {
     "array": [1, 2, 3],
     "boolean": true,
     "htmlcode": '"',
-    "unicode": '\\u20b9',
-    "invalid": '\u20b9',
+    "escaped_unicode": '\\u20b9',
+    "unicode": '\u20b9',
+    "return": '\n',
     "null": null,
     "number": 123,
     "object": {"a": "b", "c": "d"},
@@ -61,6 +63,8 @@
   };
 
   editor = new JSONEditor(container, options, json);
+
+  console.log(JSON.stringify(json));
 </script>
 </body>
 </html>