---
title: Access the JavaScript debug window
description: The JavaScript debug window enables access to the JavaScript Log and the Field Watcher tools.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/api-reference/scripts/t\_UsingTheJavaScriptDebugWindow.html
release: australia
product: Scripts
classification: scripts
topic_type: task
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [JavaScript debug window, Debugging scripts, Scripting, API implementation, API implementation and reference]
---

# Access the JavaScript debug window

The JavaScript debug window enables access to the JavaScript Log and the Field Watcher tools.

## Before you begin

Role required: admin

## About this task

The steps to access the JavaScript debug window depend on which UI version you are using.

**Note:** The JavaScript debug window is not supported with Next Experience. For more information about supported features in Next Experience, see [Considerations for activating Next Experience](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/platform-user-interface/next-experience-adoption-paths.md).

## Procedure

1.  Open the JavaScript debug window by navigating to the appropriate location for your version of the UI.

<table id="simpletable_HowToOpenJavaScriptLogAndFieldWatcherInDifferentUIs"><tbody><tr><td>

Core UI

</td><td>

1.  Click the gear icon in the banner frame.
2.  Click the **Developer** section.
3.  Toggle the **JavaScript Log and Field Watcher** switch.


</td></tr><tr><td>

UI15

</td><td>

1.  Click the gear icon in the banner frame.
2.  Click **JavaScript Log and Field Watcher**.


</td></tr><tr><td>

UI11

</td><td>

Click the debug icon in the banner frame.

</td></tr></tbody>
</table>    The JavaScript debug window re-opens at the bottom of the screen. The tab that is currently active in the window is the last tab that was active when the window was closed.

2.  Click a tab to use one of the debug window features.

    -   JavaScript Log
    -   Field Watcher

**Parent Topic:**[JavaScript debug window](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/api-reference/scripts/c_JavaScriptDebugWindow.md)

**Related topics**  


[Writing to the debug log](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/api-reference/scripts/c_WritingToTheDebugLog.md)

[Watching fields](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/api-reference/scripts/c_FieldWatcher.md)