Can we call the client script from the business rule?
If you want to call a client, script includes then you may interest to know about “Can we call client script from the business rule.” To know about it, you should be aware of the meaning of the client script also. If you want to know about it then you are at the right place. Read this article to get useful information.
What is a client script?
In ServiceNow, A client script is a sort of script that runs in the user’s browser (on the client side) to interact better with the ServiceNow user interface. This script is used to improve the user experience by giving them active and interactive functionality like validation and pop-up dialogs.

Following are some of the major features of client script:
- This script is written using Javascript language just as server-side scripts are written
- Such scripts can be added to form fields, UI pages and to give custom behavior for particular needs
- This script can combine and contributes to forming fields, UI elements, and other client-side things in ServiceNow
- This script is used to endorse user input, fill the field automatically, and show useful messages to the users
Can we call the client script from the business rule?
Yes, you can call client scripts from business rules in a particular situation. You should remember the following things to do so:
- The business rule should be set to perform on the client side. If it will set to perform on the server side, it will not able to call a client script.
- It should be included on the form or page where the business rule is activated. It can be done by adding the script to the form or UI page policy or in the client script section.
- It must be defined as a function that can be called from the business rule.
- You should be aware of any security risks when calling client scripts from business rules. Such as, if a client script performs any sensitive operation, you may take to take steps to avoid this situation to ensure the security
What are the reasons to call a client script from business rules?
Some of the key reasons to call a client script from business rules are given below:
To enhance user experience
This script is executed on the client-side, which enables a business to give rapid feedback to users without any issue.
To endorse user input
Business rules are used to enforce data validation on the server side but sometimes it is necessary to give client-side validation. Client scripts enable business to perform additional validations
To act on client-side
Client-script enables businesses to perform actions on client-side (User-side)
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