##### Description Calls a function for every child node in tree. If `type` parameter is passed, calls a function only for child nodes of a given type. ##### Parameters <table> <tr> <td><i>{string=}</i></td> <td>type</td> <td> Optional. A node type by which to filter child nodes before applying a callback function. For a list of available values see <a href="docs/node-types.md">"Node types"</a>. </td> </tr> <tr> <td><i>{Function}</i></td> <td>callback</td> <td> Function to call for every child node. Accepts following parameters: <ul> <li><code>{Object}</code> — a child node;</li> <li><code>{number}</code> — index of the child node in node list;</li> <li> <code>{Object}</code> — parent node (equals to <code>parseTree</code>). </li> </ul> </td> </tr> </table> ##### Examples ```js parseTree