#6 Technical Best Practices of Client Scripts in ServiceNow | Client Scripts in ServiceNow

Hello Guys, Welcome to SAASWITHSERVICENOW. This is short series of learning Client Scripts in ServiceNow in details. In this series you will learn about different types of client scripts, their major scenarios and practical examples.
What is Client Script in ServiceNow
A Client Script is a client-side script that runs the client side script when event occurs on the client which is the users browser like loading of form, form submission, change of a field value on the form. The table of client script is sys_script_client where all client script records are stored.
You can use client script to complete tasks like validating form before submission, setting a value of field when another field is updated with new value on the form.
You will learn following:
- Overview of Client Script in ServiceNow
- OnLoad Client Script in ServiceNow
- OnSubmit Client Script in ServiceNow
- OnChange Client Script in ServiceNow
- OnCellEdit Client Script in ServiceNow
- Technical Best Practices of Client Scripts in ServiceNow
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[@codewithsakshi4180]

thanks a lot sir.

[@Evilasdevil]

Awesome series Sir, Stay safe , please make a series on flow designer

[@SAASWithServiceNow]

Thanks, Flow designer series will be published soon.

[@Evilasdevil]

@@SAASWithServiceNow Thank you

[@rupenanjaria]

Hi Gaurav, Thank you for the videos. Always helpful!! Question: Can you please let me know how to write script to add, remove and modify columns in existing table? During development we often do it and it would be nice if we have script that we can run across multiple environments to deploy changes. I found this mini script "SncTableEditor.createElement("cmn_location", "My reference3", "my_reference3", "reference", "32", "alm_asset", "alm_asset", "global");" to add "My Reference3" column in cmn_location and we can run this in Background script section, however there is no details available over internet. Seriously!! do you know where to find more details about it/or any other best way to deploy table schema related changes?

[@SAASWithServiceNow]

SncTableEditor is part of java packages which should not be used. If you want to create field with script then you can directly create with glide record initialization in sys dictionary.

[@kkeerthi3143]

Hi.. give the link for server Script Video

[@vakacharlavyshnavi5382]

Not Recommended to use glide record is fine. But is there any reason why we should not use??

[@SAASWithServiceNow]

Server look up will always be time consuming on client and Glide record will also be synchronous call. Its better to GlideAjax or scratchpad.

[@mwebb999]

@@SAASWithServiceNow I don't see how code like this is worse than GlideAjax or scratchpad var gr = new GlideRecord('sys_user'); gr.addQuery('name', 'Joe Employee'); gr.query(myCallbackFunction); //Execute the query with callback function //After the server returns the query recordset, continue here function myCallbackFunction(gr){ while (gr.next()) { //While the recordset contains records, iterate through them alert(gr.user_name); } }