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## ReactComponent
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Component classes created by `createClass()` return instances of `ReactComponent` when called. Most of the time when you're using React you're either creating or consuming these component objects.
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Component classes created by `React.createClass()` return instances of `ReactComponent` when called. Most of the time when you're using React you're either creating or consuming these component objects.
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### getDOMNode
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@ -27,11 +27,11 @@ If this component has been mounted into the DOM, this returns the corresponding
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setProps(object nextProps[, function callback])
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```
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When you're integrating with an external JavaScript application you may want to signal a change to a React component rendered with `renderComponent()`. Simply call `setProps()` to change its properties and trigger a re-render. In addition, you can supply an optional callback function that is executed once `setProps` is completed.
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When you're integrating with an external JavaScript application you may want to signal a change to a React component rendered with `React.renderComponent()`. Simply call `setProps()` to change its properties and trigger a re-render. In addition, you can supply an optional callback function that is executed once `setProps` is completed.
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> Note:
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>
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> This method can only be called on a root-level component. That is, it's only available on the component passed directly to `renderComponent()` and none of its children. If you're inclined to use `setProps()` on a child component, instead take advantage of reactive updates and pass the new prop to the child component when it's created in `render()`.
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> This method can only be called on a root-level component. That is, it's only available on the component passed directly to `React.renderComponent()` and none of its children. If you're inclined to use `setProps()` on a child component, instead take advantage of reactive updates and pass the new prop to the child component when it's created in `render()`.
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### replaceProps
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