1. DomName('Node.insertBefore')
  2. DocsEditable()
Node insertBefore(Node node, Node child)

Inserts all of the nodes into this node directly before refChild.

Other resources

Source 

@DomName('Node.insertBefore')
@DocsEditable()
Node insertBefore(Node node, Node child) => _blink.BlinkNode.instance.insertBefore_Callback_2_(this, node, child);