onchange client script scenarios

[Swapna Abburi]

On change client scripts get executed when a field/variable value changes.

Few simple scenarios:

1. When assignment group is empty or changed, clear assigned to field. - for this scenario, you would be writing on change client script on assignment group field.

2. When priority is changed to P1, display an alert/popup message that warm transfer is required. - in this scenario, you would be writing an on change client script on priority field.

[Dr Atul G- LNG]

Hi @jankirania 

There are many use case for same:

https://developer.servicenow.com/dev.do#!/learn/courses/yokohama/app_store_learnv2_scripting_yokoham...

https://youtu.be/8g3IZIR_U-A

https://www.servicenow.com/community/developer-articles/client-script-in-servicenow-with-some-use-ca...

https://www.servicenow.com/community/developer-forum/want-some-use-cases-for-client-script-business-...

[Sandeep Rajput]

@jankirania Here are some use cases.

1. You have a "Category" field and a "Subcategory" field. When the user selects a "Category," the "Subcategory" options should be filtered to show only relevant choices.

2.You need to validate the format of a user-entered value, such as an email address, phone number, or serial number.

3. You want to show or hide fields or sections based on the value of another field.

4. When a specific field is changed, you want to automatically set the value of another field.

5. When a reference field is changed, you want to populate other fields with data from the referenced record.

6. You want to prevent a user from entering certain values in a field.