by-onlineeditor/docs/en/guide/override.md

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# Override
## How to Use
```javascript
import Editor from "@hufe921/canvas-editor"
const instance = new Editor(container, <IElement[]>data, options)
instance.override.overrideFunction = () => unknown | IOverrideResult
```
```typescript
interface IOverrideResult {
preventDefault?: boolean // Prevent the execution of internal default method. Default prevent
}
```
## paste
Feature: Override internal paste function
Usage:
```javascript
instance.override.paste = (evt?: ClipboardEvent) => unknown | IOverrideResult
```
## copy
Feature: Override internal copy function
Usage:
```javascript
instance.override.copy = () => unknown | IOverrideResult
```
## drop
Feature: Override internal drop function
Usage:
```javascript
instance.override.drop = (evt: DragEvent) => unknown | IOverrideResult
```