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Start API Reference html Methods

insertBefore

inserts a new node into the specified position

void insertBefore(HTMLElement node,HTMLElement before, [HTMLElement rescue] );

node	HTMLElement	a new DOM node
before	HTMLElement	the sibling node that the new node will be inserted before
rescue	HTMLElement	the parent node used if the subling doesn't exist

Example

var newdiv=document.createElement("div");
webix.html.insertBefore(newdiv,document.getElementById("myDiv"))

Details

The method inserts a new node before the specified sibling (the before parameter) or as the last child of the specified parent (the rescue parameter) if the sibling doesn't exist.
The third parameter is optional and used just to avoid errors in case the specified subling doesn't exist.