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# WKUserScriptInjectionTime

Constants for the times at which to inject script content into a webpage.

```
enum WKUserScriptInjectionTime
```

## Topics

### Script-Injection Times

[`WKUserScriptInjectionTime.atDocumentStart`](/documentation/WebKit/WKUserScriptInjectionTime/atDocumentStart)

A constant to inject the script after the creation of the webpage’s document element, but before loading any other content.

[`WKUserScriptInjectionTime.atDocumentEnd`](/documentation/WebKit/WKUserScriptInjectionTime/atDocumentEnd)

A constant to inject the script after the document finishes loading, but before loading any other subresources.


---

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