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# webView(_:didStartProvisionalLoadFor:)

Called when a page load is in progress in a given frame.

```
optional func webView(_ sender: WebView!, didStartProvisionalLoadFor frame: WebFrame!)
```

## Parameters

`sender`

The web view containing the frame.

`frame`

The frame being loaded.

## Discussion

This method is invoked when a new client request is made by `sender` to load a provisional data source for `frame`. This method may be invoked after sending [`load(_:)`](/documentation/WebKit/WebFrame/load(_:)-47p2s) to a `WebFrame` object or as a consequence of the user clicking a link displayed in a web frame view. Delegates might implement this method to notify the user that a request is in progress. Additional information about the request can be obtained from the data source of `frame`.

## See Also

  [WebKit Objective-C Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/DisplayWebContent/DisplayWebContent.html#//apple_ref/doc/uid/10000164i)


---

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