Fix #562: allow `$` character in property names of of a JSON schema

HISTORY.md

@@ -7,6 +7,7 @@ https://github.com/josdejong/jsoneditor
 
 - Show validation errors inline instead of at the bottom when in code
   mode. Thanks @meirotstein.
+- Fix #562: allow `$` character in property names of of a JSON schema.
 
 
 ## 2018-08-10, version 5.20.0

src/js/util.js

@@ -684,7 +684,7 @@ exports.parsePath = function parsePath(jsonPath) {
   }
 
   // find a match like '.prop'
-  var match = jsonPath.match(/^\.(\w+)/);
+  var match = jsonPath.match(/^\.([\w$]+)/);
   if (match) {
     prop = match[1];
     remainder = jsonPath.substr(prop.length + 1);