The api API provides methods that you can use when developing client scripts in the UI Builder.

This API is exposed to client scripts, also known as page scripts. Client scripts are executed in response to something happening on a page, such as:
  • User interaction events/actions, such as a button click.
  • Lifecycle events, such as a data broker execution started.
These scripts do not have to return anything to the framework and can be written as an asynchronous function.
This API is also exposed to scripted property values. These scripts are executed whenever the framework-runtime needs to calculate a value, such as:
  • Passing to a component property.
  • Determining component visibility.
  • Emitting an event with a payload.
These scripts cannot be written as an asynchronous function. They also cannot invoke side-effect methods on the api object, such as, api.emit(), api.setState(), and api.data.<data_resource_id>.*().

The api object contains both configuration dependent and configuration independent properties that you can access within the context of the associated page or component. You cannot directly modify the properties within this object. Modification can only be made through the available methods.

api - api.context.props.<page_property_name>

Page properties can be configured within UI Builder. The configuration values depend on the context in which the page is used.

Table 1. Field
Name Type Description
<page_property_name> Any Available values are dependant on the client script implementation.

To access these properties, use the following: api.context.props.<page_property_name>.

For example:
// A record page with property table could be accessed with
function isActivityStreamVisible({api}) {
  return api.context.props.table === 'incident';
} 
Note: These property values are read-only. Mutating nested object values from scripts is not supported.

api - api.context.session.<session_property>

Context session properties associated with the current user.

api - api.data.<data_resource_id>.lifecycle.lastFetchSucceeded

Boolean flag that indicates whether the last fetch attempt for the specified data resource instance finished successfully.

If the value is true, the last fetch attempt for the data resource instance finished successfully; otherwise, false.

Table 3. Field
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

api - api.data.<data_resource_id>.addErrorMessage(Object payload)

Displays the specified error message at the top of the current form.

Table 4. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the error message to display.
"payload": {
  "message": "String"
}
payload.message String Error message to display.
Table 5. Returns
Type Description
None

Example

api.data.gform.addErrorMessage({message: 'Error message'});

api -api.data.<data_resource_id>.addInfoMessage(Object payload)

Displays the specified informational message at the top of the current form.

Table 6. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the informational message to display.
"payload": {
  "message": "String"
}
payload.message String Informational message to display.
Table 7. Returns
Type Description
None

Example

api.data.gform.addInfoMessage({message: 'Test message'});

api - api.data.<data_resource_id>.addOption(Object payload)

Adds an option to the specified choice type field.

Table 9. Returns
Type Description
None

Example

api.data.gform.addOption({fieldName: 'priority', choiceLabel: 'Extremely High', choiceValue: '10'});

api - api.data.<data_resource_id>.addWarningMessage(Object payload)

Displays the specified warning message at the top of the current form.

Table 10. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the warning message to display.
"payload": {
  "message": "String"
}
payload.message String Warning message to display.
Table 11. Returns
Type Description
None

Example

api.data.gform.addWarningMessage({message: 'Test message'});

api - api.data.<data_resource_id>.clearMessage()

Removes all informational and error messages from the top of the current form.

Table 12. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

Table 13. Returns
Type Description
None

Example

api.data.gform.clearMessage();

api - api.data.<data_resource_id>.clearOptions(Object payload)

Clears all options from the specified choice type field.

Table 14. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the choice type field whose options are to be cleared.
"payload": {
  "fieldName": "String"
}
payload.fieldName String Name of the choice type field whose options are to be cleared.
Table 15. Returns
Type Description
None

Example

api.data.gform.clearOptions({fieldName: 'priority'});

api - api.data.<data_resource_id>.executeUiAction(Object payload)

Executes the specified UI action.

Table 16. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Description of the UI action to execute.
"payload": {
  "actionSysId": "String"
}
payload.actionSysId String Sys_id of the UI action to execute.

Table: UI Action [sys_ui_action]

Table 17. Returns
Type Description
None

Example

The following code example shows how to call this method.

api.data.gform.executeUiAction({actionSysId: '60615ff90f730010ac7de6f8c4767e9a'});

api - api.data.<data_resource_id>.execute(Object inputValues)

Triggers an execute operation on the specified data resource.

This method is only available if the data resource is one of the following types:
  • Composite
  • GraphQL
  • REST
  • Scriptlet
  • Transform
Note: This method is only exposed if the mutates_server_data field is set to true on the corresponding data resource (sys_ux_data_broker_* table) record. It is accessible under api.data.<data_resource_Id>.refresh().
Table 18. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource. The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.
inputValues Object Object to pass to the specified data resource. This object must conform to the data resource's input parameters.
Table 19. Returns
Type Description
None

Example

This code example shows a page script that is invoked when the Submit button on the page is clicked. The page is configured wit a Server Data Resource tat creates a new record.

function handler({api}) {
  if (api.state.movieYear === 2020) {
    // The data resource used in this case specifies two input parameters: name and year
    api.data.create_movie_record.execute({
      name: api.state.movieName,
      year: api.state.movieYear
    });
  }
}

api - api.data.<data_resource_id>.hideFieldMessage(Object payload)

Hides the oldest message next to the specified field or clears all messages associated with the field.

Table 21. Returns
Type Description
None

Example

api.data.gform.hideFieldMessage({fieldName: 'short_description'});

api - api.data.<data_resource_id>.hideRelatedList(Object payload)

Hides the specified related list on the current form.

Table 22. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the related list to hide.
"payload": {
  "listTableName ": "String"
}
payload.listTableName String Name of the related list to hide. If the list to hide is through a relationship, provide the sys_id of the list instead of the name.

Table: Related List [sys_ui_related_list]

Table 23. Returns
Type Description
None

Example

The following code example shows how to call this method.

api.data.gform.hideRelatedList({listTableName:'incident.parent_incident'});

api - api.data.<data_resource_id>.hideRelatedLists()

Hides all related lists on the current form.

Table 24. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

Table 25. Returns
Type Description
None

Example

api.data.gform.hideRelatedLists();

api - api.data.<data_resource_id>.refresh()

Triggers a refresh operation for the specified non-mutating data resource instance.

Call this method if the underlying data being fetched by the data resource changes. A data resource is considered non-mutating if the mutates_server_data field on the record is set to false.

This method is asynchronous and emits an internal event to trigger the refresh of the specified data resource instance. The UI Builder allows you to trigger client scripts in response to data resource lifecycle events, such as DATA_FETCH_SUCCEEDED and DATA_FETCH_FAILED. For additional information on these events, see Event mapping.

This method is only available if the data resource is one of the following types:
  • Composite
  • GraphQL
  • REST
  • Scriptlet
  • Transform
Note: This method is only exposed if the mutates_server_data field is set to false on the corresponding data resource (sys_ux_data_broker_* table) record.
Table 26. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource. The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.
Table 27. Returns
Type Description
None

Example

This code example shows a page script that is invoked when a dropdown item is selected in a page. The page is configured with two Server Data Resources that query problem and incident tables.

function handler({api, event}) {
  const value = event.payload.value[0];
  if (value === 'problem')
    api.data.problem_list_1.refresh();
  else if(value === 'incident')
    api.data.incident_list_1.refresh();
}

api - api.data.<data_resource_id>.reload()

Reloads the current form using the same table and sys_id.

Table 28. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

Table 29. Returns
Type Description
None

Example

api.data.gform.reload();

api - api.data.<data_resource_id>.removeOption(Object payload)

Removes an option from the specified choice type field.

Table 31. Returns
Type Description
None

Example

api.data.gform.removeOption({fieldName: 'priority', choiceValue: '1'});

api - api.data.<data_resource_id>.save()

Triggers form submission using the Save UI action.

Table 32. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

Table 33. Returns
Type Description
None

Example

api.data.gform.save();

api - api.data.<data_resource_id>.setMandatory(Object payload)

Sets whether the specified form field is mandatory.

Table 35. Returns
Type Description
None

Example

api.data.gform.setMandatory({fieldName: 'short_description', mandatory: false});

api - api.data.<data_resource_id>.setReadOnly(Object payload)

Sets the read/write capabilities of the specified form field.

Table 37. Returns
Type Description
None

Example

api.data.gform.setReadOnly({fieldName: 'short_description', readonly: false});

api -api.data.<data_resource_id>.setValue(Object payload)

Updates a specified GlideForm field with the specified value. Optionally, you can also update the display value with the same specified value.

Only the value on the form is updated. The value is not saved in the database.

Table 39. Returns
Type Description
None

Example

api.data.gform.setValue({fieldName: 'short_description', value: 'short description'});

api - api.data.<data_resource_id>.setVisible(Object payload)

Sets the visibility of the specified form field.

Table 41. Returns
Type Description
None

Example

api.data.gform.setVisible({fieldName: 'short_description', visibility: false});

api - api.data.<data_resource_id>.showFieldMessage(Object payload)

Displays the specified message next to the specified field.

Table 43. Returns
Type Description
None

Example

api.data.gform.showFieldMessage({fieldName: 'short_description', message: 'Error message', type: 'error'});

api - api.data.<data_resource_id>.showRelatedList(Object payload)

Displays the specified related list on the current form.

Table 44. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the related list to display.
"payload": {
  "listTableName ": "String"
}
payload.listTableName String Name of the related list to display. If the list to display is through a relationship, provide the sys_id of the list instead of the name.

Table: Related List [sys_ui_related_list]

Table 45. Returns
Type Description
None

Example

The following code example shows how to call this method.

api.data.gform.showRelatedList({listTableName:'incident.parent_incident'});

api - api.data.<data_resource_id>.showRelatedLists()

Displays all related lists associated with the current form.

Table 46. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

Table 47. Returns
Type Description
None

Example

api.data.gform.showRelatedLists();

api - api.data.<data_resource_id>.submit()

Triggers form submission using the specified UI action.

Table 48. Parameters
Name Type Description
data_resource_id String Unique identifier of the associated data resource.

In most cases, you can use the Form Controller CTRL_RECORD#SAVE_FORM action. If the record page has the Record Page Tabs component, the data resource for this method must be based off of GlideForm (g_form).

The available data resource instances are configuration-dependent and defined when you add the data resource to your page in UI Builder.

payload Object Object that describes the UI action to use to submit the current form.
"payload": {
  "submitActionName": "String"
}
payload.submitActionName String Name of the UI action to execute to submit the current form.
Table 49. Returns
Type Description
None

Example

api.data.gform.submit({submitActionName:'sysverb_ws_save'});

api - api.emit(String eventName, Object payload)

Emits an event with the specified name and payload.

The event name being emitted must be part of the associated page definition's dispatched events list, which is stored in the UX Macroponent Definition [sys_ux_macroponent] table. Any api.emit call that dispatches events not declared in this table are ignored.

For additional information on events, see Work with events.

Table 50. Parameters
Name Type Description
eventName String Name of the event to emit. This name should follow the UI Framework action naming guidelines:
  • Should be upper snake case, such as ITEM_CHANGED. All letters in upper case and all spaces replaced with underscores.
  • Should be past tense, such as BUTTON_CLICKED or USER_SELECTED.

For additional information on these action naming guidelines, see https://developer.servicenow.com/dev.do#!/reference/now-experience/sandiego/ui-framework/main-concepts/dispatching-actions.

payload Object Optional. Object that contains the data to send with the emitted event. This object is free-form and can contain whatever data is necessary by the entity receiving the data.
Note: Payloads of primitive type work, but could result in inconsistent behavior.
Table 51. Returns
Type Description
None

Example

The following code example shows emitting an event called NOW_UXF_PAGE#ADD_NOTIFICATIONS with an associated items payload.

function handler({api}) { 
  api.emit('NOW_UXF_PAGE#ADD_NOTIFICATIONS', { 
    items: [
      { 
        id: 'alert1', 
        status: 'positive', 
        icon: 'check-circle-outline', 
        content: 'Here is some information!', 
        textLinkProps: { 
          label: 'More info',
          href: 'https://www.servicenow.com' 
        }, 
      action: {type: 'acknowledge'} 
      } 
    ] 
  }); 
} 

api - setState(String stateParam, Any value)

Sets the value of the specified client state parameter.

Use client state parameters to maintain a shared state on a page. The shared state can then be passed as values to properties of components used on the page. You can also access and update client states in multiple page scripts. A common use case is to keep track of values input by users in multiple form controls on a page. When the form is submitted, a client script could then use all of the values stored in client state parameters to create a new record with a data broker. A page can have one or more client state parameters, which you can declare for a page through the UI Builder. You can then bind a client state parameter to one or more components to share or act on the client state parameter.

api.setState() calls are executed asynchronously and do not necessarily update the UI immediately. If the value to set depends on the currentValue of the client state parameter, or any of the properties provided in the api object, you should use this variant of the api.setState() method to avoid using outdated values.

Table 52. Parameters
Name Type Description
stateParm String Name of the client state parameter to update. This name must be declared in the client state parameters of the associated page.

For additional information on declaring client state parameters, see Work with client state parameters.

value Any - Must be the same as the client state parameter declaration. Value to set the specified client state parameter to.
Table 53. Returns
Type Description
None

Example

This example shows a script that could be executed to update the email client state parameter when an input value is set on a now-input component.

function handler({api, event}) {
    api.setState('email', event.payload.value);
}

api - setState(String stateParam, Function callbackFn)

Sets the value of the specified client state parameter to the value returned by the specified callback function.

The callback function is invoked with an object that has two properties: currentValue and api. The function should never mutate the currentValue property or the api object directly.

Use client state parameters to maintain a shared state on a page. The shared state can then be passed as values to properties of components used on the page. You can also access and update client states in multiple page scripts. A common use case is to keep track of values input by users in multiple form controls on a page. When the form is submitted, a client script could then use all of the values stored in client state parameters to create a new record with a data broker. A page can have one or more client state parameters, which you can declare for a page through the UI Builder. You can then bind a client state parameter to one or more components to share or act on the client state parameter.

api.setState() calls are executed asynchronously and do not necessarily update the UI immediately. If the value to set depends on the currentValue of the client state parameter, or any of the properties provided in the api object, you should use this variant of the api.setState() method to avoid using outdated values.

Table 54. Parameters
Name Type Description
stateParm String Name of the client state parameter to update. This name must be declared in the client state parameters of the associated page.

For additional information on declaring client state parameters, see Work with client state parameters.

callbackFn Function Callback function to execute to obtain the value.
Table 55. Returns
Type Description
None

Example

This example shows how to use api.setState to log users into a page.

function handler({api, event}) {
  const {name, value} = event.payload;
  if (name === 'username' || name === 'password') {
    // Update the loginParameters state object with the username/password value
    api.setState('loginParameters', ({currentValue}) => {
      return {
        ...currentValue,
        [name]: value
      };
    });
  }
}

api - api.state.<client_state_parameter_name>

Current value of the specified client state parameter.

Table 56. Field
Name Type Description
<client_state_parameter_name> Any. The available client state parameters are dependent on the page configuration. Name of the client state parameter. Available client states are dependant on the client script implementation.

To access the available client states, use the following: api.state.<client_state_name>.

For example:
function showRelatedLists({api}) { 
  return !api.state.isCustomListSelected; 
} 
Note: These property values are read-only. To update a client state parameter, use api.setState(). Mutating nested object values from scripts is not supported.