{"revision":"c10276e953456835cdbb1f3a60d58ae1980be353","document":{"id":42068,"path":"platform-user-interface/c_NavigationStack.md","title":"Navigation stack","bundle":null,"doc_type":null,"release":"australia","body":"\n# Navigation stack\n\nThe navigation stack is the portion of the ServiceNow suite of applications that determines where a user is redirected after the update of a record.\n\nAn administrator can cause page references to be manually inserted into the navigation stack when a link in the **Navigation Page** is clicked. This is done by modifying a module definition to include an argument of sysparm\\_stack with a string value equal to the URL reference to the page to be inserted into the stack. The administrator can also override the redirection determined by the stack by creating a business rule or editing an existing one to include `gs.setRedirect(\"http://redirect_page.com\")`.\n\n## Operating parameters of the navigation stack\n\nThe navigation stack can be thought of a user's navigation history in the instance. It is updated every time a user views a new page. The navigation stack is referenced when users press the page back button. It is also referenced when a user submits or updates a record, at which point users are redirected to their last page in the navigation stack.\n\n\\[Omitted image \"BackAndUpdate.png\"\\] Alt text: Actions that invoke the navigation stack\n\n## Inserting pages to the navigation stack\n\nThe administrator can insert page references manually into the navigation stack when a link in the navigation page is clicked. The module definition is modified to include an argument of sysparm\\_stack with a string value equal to the [URL reference](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-user-interface/navigate-using-url.md) to the page to insert into the stack. The following image shows the system definition for the **Incident** > **Create New** module. By passing an argument of \"sysparm\\_stack=incident\\_list.do\", the list view of incidents \\(incident\\_list.do\\) is added to the stack. After submitting an incident, the user is directed to this page.\n\n\\[Omitted image \"SysparmStackEx.png\"\\] Alt text: Argument in a module link\n\n## Overriding the redirection behaviors of the navigation stack with onEvent business rules\n\nThe redirection behaviors that occur as a result of navigation stack behaviors can be overridden using onEvent business rules. This override is performed by using the function **gs.setRedirect**. Doing so overrides the redirection as determined by the navigation stack, when the specified event occurs. The function **gs.setRedirect** takes a string argument that is a URL for the page that the user is redirected to. This URL can be external, for example: **gs.setRedirect\\('http://www.google.com'\\)**.\n\n**Parent Topic:**[User interface configuration](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-user-interface/p_NavigationAndUIConfiguration.md)\n\n"}}