The helpers API provides general functionality that is common across page scripts, eliminating the need to write scripts for simple functionality such as opening and closing a modal.

This API is only available to page scripts, it is not available in any other UI Builder scripts including:
  • component property value scripts
  • component visibility scripts
  • event payload scripts
  • UX client script includes

helpers - helpers.modal.close(String modalId)

Closes the specified modal on the current page.

Table 1. Parameters
Name Type Description
modalId String Modal component ID of the modal to close. Component IDs are auto generated when a component is dragged and dropped on the UI Builder stage. You can locate the ID on the property page.
Table 2. Returns
Type Description
None

Example

This example shows closing a modal with a component ID that ends with alert-modal.

function handler({api, event, imports, helpers}) {
  helpers.modal.close("[component-id$='alert_modal']")
}

helpers - helpers.modal.open(String modalId, Object options)

Opens the specified modal on the current page.

You can only display one modal at a time within a page. If a modal is currently open, and you call this method, the existing modal is hidden and the new modal appears.

Table 3. Parameters
NameTypeDescription
modalId String Component ID of the modal to open. Component IDs are auto generated when a component is dragged and dropped on the UI Builder stage. You can locate the ID on the property page.
options Object Optional.
"options": {
  "content": "String",
  "contentFullWidth": Boolean,
  "headerLabel": "String",
  "size": "String"
}
options.content String Text content for the modal.
options.contentFullWidth Boolean Flag that indicates whether to remove the horizontal padding around the body of the modal in order to fit wider content.
Valid values:
  • true: Remove the padding.
  • false: Do not remove the padding.

Default: false
options.headerLabel String Text content for the modal header.
options.size String Size of the modal container. Most sizes automatically expand to fill the viewport when the screen size is small.
Valid values:
  • sm
  • md
  • lg
  • fullscreen

Default: sm
Table 4. Returns
Type Description
None

Example

This example shows opening a modal with ca omponent ID that ends with alert-modal.

function handler({api, event, imports, helpers}) {
  helpers.modal.open("[component-id$='alert_modal']")
}

helpers - helpers.navigate.setRouteParams(Object params)

Passes the specified parameters down to other components on the same page.

Use this method in any page component that wants to add a parameter in a URL. You may want to add a parameter to a URL when another component needs to know the current value of that parameter when it changes, so it can react to it. For example, use this method to pass the selectedIndex of a tab component so it reflected in the URL to give focus to that tab.

Table 5. Parameters
Name Type Description
params Object Key-value pairs of optional parameters to pass to other components.

This must be a plain, flat object with only primitive values. Array or object references are ignored and not added to the URL. All specified keys  must be part of  the optional parameters  in the route configuration or they are also ignored. For additional information on optional parameters, see Create a page in UI Builder.
Table 6. Returns
Type Description
None

Example

This code example shows how to append the URL params/selected-tab-index/2. Note that the parameter in the actual URL is changed from camel case to snake case, so selectedTabIndex becomes selected-tab-index.

function handler({api, event, helpers, imports}) {  
  helpers.navigate.setRouteParams({'params': {'selectedTabIndex':  2}});  
}

helpers - helpers.navigate.to(String route, Object fields, Object params, Boolean redirect, Boolean passiveNavigation, String targetRoute)

Navigates from one screen to another based on the specified route and field information. URL changes and the respective screen loads are observed.

Table 7. Parameters
NameTypeDescription
route String Name of the route. Must be a valid entry from UX App Routes (sys_ux_app_route.list). This value is reflected in the URL, and the URL is created based on the route, fields, and optionalParams column values: /<route>/<field1Value>/{<field2Value>/params/<optionalParamKey1>/<optionalParamValue1>/<optionalParamKey2>/<optionalParamValue2>

For example: /record/incident/12345/params/selectedTabIndex/4
fields Object Optional. Key-value pairs of required parameters. For example: 'fields' : {'table': 'incident', 'sysId': '12345'}.
params Object Optional. Key-value pairs of optional parameters. For example: 'params' : {'selectedTabIndex': 4}.
redirect Boolean Flag that indicates whether to remove the latest history entry from the browser history. For example, if you navigate to sites A, B and then C. If redirect is set to true while navigating to C, the history entry for B is removed. The browser history only shows only A and C.
Valid values:
  • true: Removes the latest history entry, and redirects to the latest URL.
  • false: Does not remove any history entries.

Default: false
passiveNavigation Boolean Flag that indicates whether to perform background navigation. Background navigation is when a page is opened but it is not active or shown. For example, opening an inactive tab for the page, but it is not visible but loaded in the background.
Valid values:
  • true: Perform background navigation.
  • false: Do not perform background navigation.

Default: false
targetRoute String or Object Sub navigation to a drill-down, deep-link, or sub-tab. If set to current, the current route does a sub-navigation under the current URL.

For example, if /record/incident/123 is the current URL, and the following call is made:

helper.navigate.to('record', {'table': 'problem', 'sysId': '567'}, {}, false, false, 'current');

The following URL is generated: /record/incident/123/sub/record/problem/567

Note: targetRoute can be either a string such as 'current' or an object, such as navigation NAV_ITEM_SELECTED payload.
Table 8. Returns
Type Description
None

Example

This example shows how to navigate to a page passing just the route parameter.

function handler({api, event, imports, helpers}) {
  helpers.navigate.to('test');
}

Example

This example shows how to navigate to a page passing the route and fields parameters.

function handler({api, event, imports, helpers}) {
  helpers.navigate.to('test', {'key': 'value'});
}

Example

This example shows how to navigate to a page passing the route, fields, and params parameters.

function handler({api, event, helpers, imports}) {
  helpers.navigate.to('test', {'key': 'value'}, {'first': 'FirstName', 'last': 'Last Name'});
}

helpers - helpers.screen.updateStatus(Object statusObj)

Enables pages to report their status updates, such as title, icon, dirty state, message, and error changes.

Status updates are reported to WorkspaceChrome or AppShell, whichever the outer layer is, and acting as the host.

Table 9. Parameters
Name Type Description
statusObj Object Payload to send to the current page to report that the content has been updated.
Valid values:
  • dirtyModalId: (String) ID of the modal that has changed.
  • hasError: (Boolean) Flag that indicates that there are errors on the page.
  • hasUpdate: (Boolean) Flag that indicates that there were updates to the page.
  • icon: (String) Name of the updated or new icon.
  • isDirty: (Boolean) Flag that indicates whether the page is dirty (values have changed).
  • message: (String) Updated/new message.
  • screenKey: (String) ID of the screen on which the change occurred. Every screen has a screenKey as a property on the screen macroponent inside sn-canvas-screen.
  • status: (String) Status operation for this action. This value must be one of the following: inserted, deleted, saved, or closed.
  • title: (String) Updated/new display title.
  • tooltipPreview: (JSON) Updated or new tool tip. For example, tooltipPreview : { primaryTitle, secondaryContent: {} }
Table 10. Returns
Type Description
None

Example

screen.updateStatus({'dirtyModalId': 'customModalId', 'isDirty': true});

helpers - helpers.snHttp(String url, Object options)

Makes an HTTP request to the ServiceNow instance and returns a promise with the results.

Note: There is a known issue where objects named options are omitted from the HTTP response.
{
  options: {},
  otherFields: {}
}

becomes

{
  otherFields: {}
}
Table 11. Parameters
NameTypeDescription
url String HTTP endpoint relative to the instance URL. For example, /api/now/table/incident or /api/now/table/incident/a83820b58f723300e7e16c7827bdeed.
options Object Describes the contents of the HTTP request.
"options": {
  "batch": Boolean,
  "body": {Object},
  "headers": {Object},
  "method": "String"
}
options.batch Boolean Optional. Flag that indicates whether this HTTP request should be batched with other HTTP requests made to the instance.
Valid values:
  • true: Make request as part of a batch request.
  • false: Make dedicated request.

Default: true
options.body Object Optional. Data to send as the request body. Only applicable for request methods PUT, POST, and PATCH. Elements in the object depend on the type of HTTP method. For details, refer to the code examples below.

Default: {}
options.headers Object Optional. Additional HTTP request headers.

For example:

headers: {
  "Content-Type": "application/json",
  "Accept": "application/xml"
}
options.method String Optional. HTTP method.
Valid values:
  • DELETE
  • GET
  • PATCH
  • POST
  • PUT

Default: GET
Table 12. Returns
TypeDescription
error Object that describes any error returned by the REST API.

Data type: Object

"error": {
  "data": "String",
  "message": "String",
  "options": {Object},
  "status": Number,
  "statusText": "String"
}
error.data Response returned from the HTTP API.

Data type: Defined by REST API
error.message Message describing the error encountered when trying to process the HTTP request.
Note: This parameter is not always returned.

Data type: String
error.options Describes the original HTTP request.

Data type: Object

"options": {
  "headers": {Object},
  "responseHeader": {Object}
}
error.options.headers Object containing a list of all of the request headers sent in the request.

Data type: Object
error.options.responseHeaders Object containing a list of all of the response headers sent in the request.

Data type: Object
error.status Returned HTTP error status code, such as 400, 405, or 500.

Data type: Number
error.statusText Returned HTTP status message, such as Bad Request.

Data type: String
response Returned when HTTP request is successful. The response to the HTTP request.

Data type: Any

Example

The following example show how to call snHttp() which returns a promise.

function handler({api, event, helpers, imports}) {
  helpers.snHttp('/api/now/table/u_movie', {method: 'GET'})
    .then(({response}) => {
      // do something with the table data
    })
    .catch(({error}) => {
      const message = `Error: ${error.data.error.message}`;
      console.error(message);
      api.emit('NOW_UXF_PAGE#ADD_NOTIFICATIONS', {
        id: 'alert5',
        status: 'high',
        icon: 'info-circle-outline',
        content: message,
        action: { type: 'dismiss' }
    });
  });
}

Example

The following example show how to call snHttp() using async and await.

async function handler({helpers}) {
  try {
    const result = await helpers.snHttp('/api/now/table/u_movie', {method: 'GET'});
  } catch ({error}) {
      const message = `Error: ${error.data.error.message}`;
      console.error(message);
      api.emit('NOW_UXF_PAGE#ADD_NOTIFICATIONS', {
        id: 'alert5',
        status: 'high',
        icon: 'info-circle-outline',
        content: message,
        action: { type: 'dismiss' }
      });
  }
}

Example

The following example show how to set up a POST request.

function handler({api, helpers, event, imports}) {
  helpers
    .snHttp("/api/now/table/incident", {
      method: "POST",
      body: {
        description: "Sample description",
        close_notes: "Sample close notes",
        order: "-1"
      }
    })
    .then(({ response }) => {
      // handle POST request response
    })
    .catch(({ error }) => {
      // handle POST request errors
    });
}

Example

The following example show how to set up a PUT request.

function handler({api, helpers, event, imports}) {
  helpers
    .snHttp("/api/now/table/incident/a83820b58f723300e7e16c7827bdeed2", {
      method: "PUT",
      body: {
        activity_due: "1970-04-02 18:26:17"
      },
      headers: {
        "Content-Type": "application/json",
        "Accept": "application/xml"
      }
    })
    .then(({ response }) => {
      // handle PUT request response
    })
    .catch(({ error }) => {
      // handle PUT request errors
    });
}

helpers - helpers.timing.clearInterval(Number timeoutId)

Cancels the execution of the function that was scheduled through a prior setInterval() call.

Table 13. Parameters
Name Type Description
timeoutId Number Unique identifier of the scheduled function to clear. This value is returned by the corresponding setInterval() call.
Table 14. Returns
Type Description
None

Example

This example shows using clearInterval() to cancel a timing operation that was previously set using thesetInterval() method. This function could be invoked by a user clicking a Disable Auto-refresh button on a page.

function handler({api, helpers}) {
  api.setState('intervalId', ({currentValue}) => {
    if (currentValue > -1) {
      helpers.timing.clearInterval(currentValue);
    }
    return -1;
  });
}

helpers - helpers.timing.clearTimeout(Number timeoutId)

Cancels the execution of the function that was scheduled through a prior setTimeout() call.

Table 15. Parameters
Name Type Description
timeoutId Number Unique identifier of the scheduled function to clear. This value is returned by the corresponding setTimeout() call.
Table 16. Returns
Type Description
None

Example

This code example shows how to terminate a timer with the specified timeoutId.

function handler({api, helpers}) {
  api.setState('timeoutId', ({currentValue}) => {
    if (currentValue > -1) {
      helpers.timing.clearTimeout(currentValue);
    }
    return -1;
  });
}

helpers - helpers.timing.setInterval(Function fn, Number delay)

Repeatedly executes the specified function, using the specified delay value as the interval between function calls.

Unlike the native JavaScript setInterval() method, this method does not support passing a code string to evaluate as the first argument. Any additional arguments are passed to the function itself.

Table 17. Parameters
Name Type Description
fn Function Function to repeatedly execute.
delay Number Length of the time-interval between each function execution.

Unit: Milliseconds
Table 18. Returns
Type Description
Number Unique identifier of the function execution operation. Use this value in the helpers - helpers.timing.clearInterval(Number timeoutId) method if you need to cancel this operation.

Example

This code example shows how to refresh the timestamp on a page every second. This function could be invoked by a user clicking an Enable Auto-refresh button on a page.

function handler({api, helpers}) {
  // Every one second, refresh the value of current timestamp client state parameter
  const intervalId = helpers.timing.setInterval(() => {
    api.setState('currentTimestamp', new Date().toString())
  }, 1000);

  // The interval ID is kept in state to use when calling the helpers.timing.clearInterval() method at a later point
  api.setState('intervalId', intervalId);
}

helpers - helpers.timing.setTimeout(Function fn, Number delay)

Executes the specified function, after the specified delay.

Unlike the native JavaScript setTimeout() method, this method does not support passing a code string to evaluate as the first argument. Any additional arguments are passed to the function itself.

Table 19. Parameters
Name Type Description
fn Function Function to execute.
delay Number Length of the time to wait before calling the specified function.

Unit: Milliseconds
Table 20. Returns
Type Description
Number Unique identifier of the function execution operation. Use this value in the helpers - helpers.timing.clearTimeout(Number timeoutId) method if you need to cancel this operation.

Example

This code example shows how to set a 20 minute timer. You could associate this function with a button Remind me in 20 minutes.

function handler({api, helpers}) {
  const timeoutId = helpers.timing.setTimeout(() => {
    api.emit('NOW_UXF_PAGE#ADD_NOTIFICATIONS', {
      id: 'alert5',
      status: 'high',
      icon: 'info-circle-outline',
      content: 'Try to look away at something that is 20 feet away from you for a total of 20 minutes.',
      action: { type: 'dismiss' }
    });
  }, 20 * 60 * 1000);

  // The timeout ID is kept in state to use when calling the helpers.timing.clearTimeout() method at a later point
  api.setState('timeoutId', timeoutId);
}

helpers - helpers.translate(String message, String tokens)

Asynchronously retrieves and translates the specified message based on the current user's session language.

You can use this method with the api - setState(String stateParam, Any value) to bind the translated value to other fields on the page.

Note: You can call this method using a promise or async and await. The code examples below show both implementations.
Table 21. Parameters
Name Type Description
message String Message to translate.
tokens String Optional. Comma-separated list of parameters to use for replacing string variables.

For example:

helpers.translate('Text {0} {1}', 'to', 'translate');
Table 22. Returns
Type Description
String Translated text string.

Example

The following example shows how to pass in table field references to embed in the corresponding variables in a string, using a promise.

function handler ({api, helpers}) {
  helpers.translate('Welcome {0} {1}!', user.firstName, user.lastName)
    .then((translatedText) => {
      api.setState('greeting', translatedText);
    });
}

Example

The following example shows how to use async and await in your function instead of a promise.

async function handler ({api, helpers}) {
  const translatedText = await helpers.translate('Welcome to {0}', 'ServiceNow');
    api.setState('greeting', translatedText);
}