# ExternalMountViewDetail

> _Since v0.1.1_

Event detail for mounting external view renderers.

Emitted when a cell uses an external component spec (React, Angular, Vue)
and needs the framework adapter to mount the component.

#### Example

```typescript
// Framework adapter listens for this event
grid.on('mount-external-view', ({ placeholder, spec, context }) => {
  // Mount framework component into placeholder
  mountComponent(spec.component, placeholder, context);
});
```

## Properties

| Property | Type | Description |
| -------- | ---- | ----------- |
| `placeholder` | <code>HTMLElement</code> |  |
| `spec` | <code>unknown</code> |  |
| `context` | <code>object</code> |  |

## See Also

- [`ColumnConfig.externalView`](/grid/api/core/interfaces/columnconfig.md#externalview) for external view spec
- [`FrameworkAdapter`](/grid/api/framework-adapters/interfaces/frameworkadapter.md) for adapter interface