---
sourceDocument: Australia ServiceNow AI Platform Capabilities
sourceDocumentLink: https://www.servicenow.com/docs/r/servicenow-platform

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia ServiceNow AI Platform Capabilities

ft:clusterId :

    - platcap

bundleId :

    - platcap

workflow :

    - Platform


---

# Create a Service Catalog client script

# Create a Service Catalog client script {#ariaid-title1}

* Release version: Australia
* 
* Updated March 12, 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read

You can create client scripts to customize the catalog.

## Before you begin

Role required: admin

## About this task

Use catalog client scripts to control the behavior of the catalog items
when presented to your users. Catalog client scripts can be applied to a catalog
item or a variable set. These scripts run on the browser instead of the server,
allowing you to better control the information that the user submits.  
The priority order for g_form APIs is:

1. Mandatory (highest)
2. ReadOnly/Display
{#t_CreateACatalogClientScript__ol_lvz_g3z_sbb}

If a variable is set to mandatory and doesn't have a value, readonly or hide doesn't work on that variable. If a variable is hidden or readonly, and then set to mandatory, the variable field becomes visible or editable.

This priority order is also applicable for variable sets and containers. If a variable set or container has a mandatory variable without any value, then the container or variable set can't be hidden.

## Procedure

1. Navigate to AllService CatalogCatalog AdministrationCatalog Client Scripts.  
   A list of current custom catalog client scripts appears.
2. Select New.
3. On the form, fill in the fields.  
   {#t_CreateACatalogClientScript__table_bw1_3g1_dq__entry__2}

   | Field | Description |
   |-|-|
   | Name | Unique name for the catalog client script. |
   | Applies to | Item type this client script applies to: * A Catalog Item: enables the Catalog item field. * A Variable Set: enables the Variable set field. {#t_CreateACatalogClientScript__ul_nx1_3g1_dq} |
   | Active | Check box to enable the client script. Clear the check box to disable the script. |
   | UI Type | Whether to apply this field to desktop, Classic Mobile, or both. |
   | Script | Enter the client script to run on the service catalog item. |
   | Type | Select when the script runs, such as onLoad or onSubmit. |
   | Catalog item or Variable set | Select a catalog item or variable set from the list. The field name and options available depend on the selection in the Applies to field. |
   | Applies on a Catalog Item view | Check box to apply the catalog client script to catalog items displayed within the order screen on the service catalog. Available in the requester view. |
   | Applies on Requested Items | Check box to apply the catalog client script on a Requested Item form, after the item is requested. Available in the fulfiller view. See [VEditor](https://www.servicenow.com/docs/xztXcYfAs7WG0FHY9plRiQ#service-catalog-variable-editor__cat-VEditor). |
   | Applies on Catalog Tasks | Check box to apply the catalog client script when a Catalog Task form for the item is being displayed. Available in the fulfiller view. See [VEditor](https://www.servicenow.com/docs/xztXcYfAs7WG0FHY9plRiQ#service-catalog-variable-editor__cat-VEditor). |
   | Applies on the Target Record | Check box to support the catalog client script on a record created for task-extended tables via record producers. See [Default variable editor](https://www.servicenow.com/docs/xztXcYfAs7WG0FHY9plRiQ#service-catalog-variable-editor__cat-default-variable-editor). |
   [ ]

   {#t_CreateACatalogClientScript__table_bw1_3g1_dq}
4. Select Submit.

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