## insert_before {#aspose.html.dom.Node-aspose.html.dom.Node}

Inserts the node before the existing child node child. If child is null, insert node at the end of the list of children.
If child is a DocumentFragment object, all of its children are inserted, in the same order, before child. If the child is already in the tree, it is first removed.


### Returns 


Returns inserted node


```python
def insert_before(self, node, child):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| node | aspose.html.dom.Node | The new child. |
| child | aspose.html.dom.Node | The ref child. |



### See Also
* module [`aspose.html`](../../)
* class [`HTMLTableSectionElement`](/html/python-net/aspose.html/htmltablesectionelement)
* class [`Node`](/html/python-net/aspose.html.dom/node)