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[`MarkdownPostProcessorContext`](MarkdownPostProcessorContext) › [`addChild`](MarkdownPostProcessorContext/addChild)
## MarkdownPostProcessorContext.addChild() method
Adds a child component that will have its lifecycle managed by the renderer.
Use this to add a dependent child to the renderer such that if the containerEl of the child is ever removed, the component's unload will be called.
**Signature:**
```typescript
addChild(child: MarkdownRenderChild): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>child</code> | [`MarkdownRenderChild`](MarkdownRenderChild) | |
**Returns:**
`void`