# Project Properties Window: JavaScript

You can use this panel to switch between JavaScript versions for your project and enable comments in JSON files.

This panel contains the following elements:

Value | Description
--- | ---
ECMA Version | Select the version of the ECMAScript to switch between JavaScript language versions that are more compatible with the targeted browser.
Allow comments in JSON files | Select to have the IDE ignore comments in JSON files and not to report comments as errors.

Related Topics

Developing Applications with NetBeans IDE,

Copyright © 2016, Oracle and/or its affiliates. All rights reserved.