isSubtab() for Lightning Experience

Checks whether a tab is a subtab. This method works only in Lightning console apps. This method isn’t supported for Lightning Web Components (LWC).

To check whether a tab is a subtab in LWC, use getTabInfo().

Arguments

Name	Type	Description
`tabId`	string	ID of the tab.

Aura Components Sample Code

This component has a button that checks whether the focused tab is a subtab and opens a modal with the answer.

Component code:

1<aura:component implements="flexipage:availableForAllPageTypes" access="global" >
2    <lightning:workspaceAPI aura:id="workspace" />
3    <lightning:button label="Is the Focused Tab a Subtab?" onclick="{! c.isFocusedTabSubtab }" />
4 </aura:component>

Controller code:

1({
2    isFocusedTabSubtab : function(component, event, helper) {
3        var workspaceAPI = component.find("workspace");
4        workspaceAPI.getFocusedTabInfo().then(function(response) {
5            workspaceAPI.isSubtab({
6                tabId: response.tabId
7            }).then(function(response) {
8                if (response) {
9                    confirm("This tab is a subtab.");
10                }
11                else {
12                    confirm("This tab is not a subtab.");
13                }
14            });
15        })
16        .catch(function(error) {
17            console.log(error);
18        });
19    }
20})

Response

This method returns a promise that, upon success, resolves to true if the tab is a subtab, and false otherwise.