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# goBack(for:completionHandler:)

Called to navigate the tab to the previous page in its history.

```
optional func goBack(for context: WKWebExtensionContext, completionHandler: @escaping ((any Error)?) -> Void)
```

## Parameters

`context`

The context in which the web extension is running.

`completionHandler`

A block that must be called upon completion. It takes a single error argument, which should be provided if any errors occurred.

## Discussion

Navigates to the previous page in the tab’s web view via [`goBack()`](/documentation/WebKit/WKWebView/goBack()) if not implemented.

---

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