---
title: "subscript(tab:)"
framework: swiftui
role: symbol
role_heading: Instance Subscript
path: "swiftui/tabviewcustomization/subscript(tab:)"
---

# subscript(tab:)

The customization of the tab, identified by its customization identifier.

## Declaration

```swift
subscript(tab id: String) -> TabViewCustomization.TabCustomization { get set }
```

## Overview

Overview You can imperatively set properties by subscripting with the tab ID. The following example sets the tab’s sidebar visibility: customization[tab: "com.myApp.alerts"].sidebarVisibility = .hidden