Difference in client scripts and catalog scripts

[GowthamGr]

Brief explination about client and catalog client scripts 

[Dr Atul G- LNG · Accepted solution]

Client Scripts and catalog Client Scripts are virtually the exact same sort of script. The differences are that client scripts execute against a form with a certain type of record, whereas catalog Client Scripts execute against a certain catalog item or variable set within a catalog item.

https://www.linkedin.com/posts/servicenow-space_servicenow-servicenowspace-learning-activity-7413207...

[yashkamde · Accepted solution]

Hello @GowthamGr ,

There is nothing a much difference between them,

In short : Client Scripts apply to standard forms across the platform, while Catalog Client Scripts are tailored for Service Catalog item forms. Both are powerful tools to improve usability and enforce business rules at the client side.

If my response helped mark as helpful and accept the solution.

[SohamTipnis · Accepted solution]

Hi @GowthamGr,

In ServiceNow, a Client Script is used to control how a form behaves when a user is working on it. It runs in the browser and helps with things like making fields mandatory, setting them to read-only, validating inputs, or showing messages based on user actions. For example, you can make the “Close Notes” field mandatory when an Incident is being resolved.

A Catalog Client Script, on the other hand, works specifically for Service Catalog items. It controls the behavior of catalog variables (like dropdowns, checkboxes, or text fields) inside a catalog item. For example, you can show additional configuration options only when a user selects “Request New Laptop.”

In simple terms, both control form behavior — but Client Scripts are for normal forms, while Catalog Client Scripts are for catalog items.

Simple Difference

• Client Script => Works on standard forms (Incident, Problem, etc.)

• Catalog Client Script => Works only on Service Catalog items

If you find my answer useful, please mark it as Helpful and Correct. ‌‌‌‌‌😊

Regards,
Soham Tipnis
ServiceNow Developer ||  Technical Consultant
LinkedIn: www.linkedin.com/in/sohamtipnis10

[Dr Atul G- LNG · Accepted solution]

Client Scripts and catalog Client Scripts are virtually the exact same sort of script. The differences are that client scripts execute against a form with a certain type of record, whereas catalog Client Scripts execute against a certain catalog item or variable set within a catalog item.

https://www.linkedin.com/posts/servicenow-space_servicenow-servicenowspace-learning-activity-7413207...

[GowthamGr]

Thanks Atul. You done a good job .

[yashkamde · Accepted solution]

Hello @GowthamGr ,

There is nothing a much difference between them,

In short : Client Scripts apply to standard forms across the platform, while Catalog Client Scripts are tailored for Service Catalog item forms. Both are powerful tools to improve usability and enforce business rules at the client side.

If my response helped mark as helpful and accept the solution.

[SohamTipnis · Accepted solution]

Hi @GowthamGr,

In ServiceNow, a Client Script is used to control how a form behaves when a user is working on it. It runs in the browser and helps with things like making fields mandatory, setting them to read-only, validating inputs, or showing messages based on user actions. For example, you can make the “Close Notes” field mandatory when an Incident is being resolved.

A Catalog Client Script, on the other hand, works specifically for Service Catalog items. It controls the behavior of catalog variables (like dropdowns, checkboxes, or text fields) inside a catalog item. For example, you can show additional configuration options only when a user selects “Request New Laptop.”

In simple terms, both control form behavior — but Client Scripts are for normal forms, while Catalog Client Scripts are for catalog items.

Simple Difference

• Client Script => Works on standard forms (Incident, Problem, etc.)

• Catalog Client Script => Works only on Service Catalog items

If you find my answer useful, please mark it as Helpful and Correct. ‌‌‌‌‌😊

Regards,
Soham Tipnis
ServiceNow Developer ||  Technical Consultant
LinkedIn: www.linkedin.com/in/sohamtipnis10