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ServiceNow getUniqueValue() vs gel()

Here’s a comparison between g_form.getUniqueValue(); and gel('sys_uniqueValue').value; in ServiceNow presented in a table format:

Featureg_form.getUniqueValue();gel(‘sys_uniqueValue’).value;
PurposeRetrieves the unique sys_id value of the current record being viewed or edited on a form.It relies on the presence of an HTML element with the ID ‘sys_uniqueValue’ on the form, which may vary depending on form configuration.
UsageUsed within client-side scripts such as Client Scripts, UI Policies, or Client-side Business Rules.Also used within client-side scripts to access the sys_id of the current record.
AvailabilityRetrieves the value of the HTML element with the ID ‘sys_uniqueValue’, which typically holds the current record’s unique sys_id value.Utilizes a standard JavaScript function (gel()) to retrieve a reference to an HTML element by its ID.
Return ValueReturns the unique sys_id value of the current record as a string.Returns the value of the HTML element with the ID ‘sys_uniqueValue’ as a string.
Dependency on Form ElementIt is supported by standard JavaScript and can be used in any context where client-side scripting is allowed.It does not rely on a specific HTML element; it is provided as part of the ServiceNow platform’s client-side API.
Example Usagejavascript var uniqueValue = g_form.getUniqueValue();javascript var uniqueValue = gel('sys_uniqueValue').value;
ContextPrimarily used within ServiceNow forms and related client-side scripts for form interactions.Used in various client-side scripting scenarios where access to the current record’s sys_id is required.
SupportabilitySupported by ServiceNow and documented as part of the g_form API documentation.It relies on the presence of an HTML element with the ID ‘sys_uniqueValue’ on the form, which may vary depending on the form configuration.

This table provides a comparison between g_form.getUniqueValue(); and gel('sys_uniqueValue').value; in ServiceNow, highlighting their purposes, usage, availability, return values, dependencies, example usage, context, and supportability.

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