Best way to improve my ServiceNow scripting skills?

[CharlesW8781780]

I’m currently learning ServiceNow development and have a basic understanding of JavaScript. I’m finding it difficult to know when to use Business Rules, Client Scripts, Script Includes, and UI Policies. What would be a good approach for learning these properly through real-world examples?

[Aditya_hublikar · Accepted solution]

Hello @CharlesW8781780 ,

Welcome to ServiceNow development 😀

One thing that helped me when learning ServiceNow was not trying to learn Business Rules, Client Scripts, Script Includes, and UI Policies as completely separate topics. Instead, try to understand where the requirement needs to be handled — client side, server side, or reusable logic.

A simple way to think about them:

UI Policy : Use for simple form behavior such as making fields mandatory, read-only, or visible based on conditions.

Client Script : Use when you need JavaScript on the client side, such as reacting to field changes, validating user input, or dynamically modifying the form.

Business Rule : Use for server-side logic that should run when records are inserted, updated, deleted, etc. Remember that Business Rules can also protect data when records are modified through imports, integrations, APIs, etc.

Script Include : Use when you have server-side logic that needs to be reused from multiple places. You can also use it with GlideAjax when client-side code needs server-side information.

I would recommend learning them through real-world scenarios instead of only reading definitions.

Once you are comfortable with these, move on to GlideRecord, GlideAjax, ACLs Scheduled Jobs, and integrations.

Most importantly, don't focus too much on memorizing syntax. Try to solve 20–30 real-world requirements, and for each one decide why you chose a particular tool. That will build much stronger ServiceNow development skills.

Refer this :

https://www.servicenow.com/docs/r/api-reference/scripts/usefulScripts.html

Here are few thread that you can refer   :

https://www.servicenow.com/community/itsm-forum/servicenow-interview-questions-part-1/td-p/3511504

https://www.servicenow.com/community/itsm-forum/scripting-practice-question/td-p/3529846

https://www.servicenow.com/community/itsm-forum/scripting-interview-questions/td-p/3545279

https://www.servicenow.com/community/virtual-agent-forum/scenario-based-and-theoretical-interview-qu...

If this helps you then mark it as helpful and accept as solution.

Regards,

Aditya

[CharlesW8781780]

Hi @Aditya_hublikar 

Thanks for your reply I noted your guide and this was help me too..

[Aditya_hublikar]

Hello @CharlesW8781780 ,

I hope you are doing well . If my response helps you then you can mark it as helpful and accept as solution and can close this thread . So it will help further community members for future queries .