---
sourceDocument: Xanadu API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/xanadu/api-reference

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# Using regular expressions in server-side scripts

# Using regular expressions in server-side scripts {#ariaid-title1}

* Release version: Xanadu
* 
* Updated August 1, 2024
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

JavaScript regular expressions automatically use an enhanced regex engine, which
provides improved performance and supports all behaviors of standard regular expressions as
defined by Mozilla JavaScript. The enhanced regex engine supports using Java syntax in regular
expressions.

The SNC.Regex API is not available for scoped applications. For scoped
applications, remove the SNC.Regex API and use standard JavaScript regular
expressions.

For more information on JavaScript regular expressions, see the Mozilla JavaScript
documentation on [regular expressions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) and [RegExp](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp).
* **[Using Java syntax in JavaScript regular expressions](https://servicenow-prod.fluidtopics.net/lZNZ7pPP8wVSldV5zRN7LQ)**   
  The enhanced regex engine includes an additional flag to allow Java syntax to be used in JavaScript regular expressions.
* **[Convert SNC Regex expressions to enhanced regex expressions](https://servicenow-prod.fluidtopics.net/LlAhZuDSoI8gNrT9w19RVw)**   
  When you upgrade to Eureka Patch 5 or later releases, you should convert scripts that use the SNC.Regex API to use regular JavaScript expressions.