difference between client script and ui policy

[sas11]

difference between client script and ui policy

[Rajesh Mushke]

Hi Sasmita,

you can find everything in this blog post.

A Race between UI Policy and Client script

[Jaspal Singh]

Hi Sasmita,

Apart from what Rajesh has suggested in post above. In simple terms, both UI Policy & Client Script are almost similar only thing is scripting is involved in Client script, also client scripts excutes first when compared to UI Policies.

[Rajesh Mushke]

now i will explain best practices,

UI Policy :

1. ui policies are alternate to client scripts.

2. Always use Ui policy for making fields read-only and Mandatory & Hiding.

Client Scripts vs. UI Policies

Client Scripts and UI Policies both execute client-side logic and use the same API. Both are used to manage forms and their fields. When developing an application, how can you decide which client-side script type to use? Use this table to determine which type is best suited to your application's needs:

Criteria	Client Script	UI Policy
Execute on form load	Yes	Yes
Execute on form save/submit/update	Yes	No
Execute on form field value change	Yes	Yes
Have access to field's old value	Yes	No
Execute after Client Scripts	No	Yes
Set field attributes with no scripting	No	Yes
Require control over order of execution	*Yes	Yes

*Although the Order field is not on the Client Script form baseline you can customize the form to add it.

UI Policies execute after Client Scripts. If there is conflicting logic between a Client Script and a UI Policy, the UI Policy logic applies.

Refer :

https://developer.servicenow.com/app.do#!/training/article/app_store_learnv2_scripting_jakarta_clien...

[Rajesh Mushke]

Hello Sasmita,

Hope your query is been answered , so please close this thread.

Then only this will be helpful for other community customers.

Let me know if that answered your question. If so, please mark my response as correct so that others with the same question in the future can find it quickly and that it gets removed from the Unanswered list. Visit How To Mark Answers Correct From Community Inbox

Thanks in Advance............