ReadonlycollapsedThe read-only collapsed property of the AbstractRange interface returns true if the range's start position and end position are the same.
ReadonlyendThe read-only endContainer property of the AbstractRange interface returns the Node in which the end of the range is located.
ReadonlyendThe endOffset property of the AbstractRange interface returns the offset into the end node of the range's end position.
ReadonlystartThe read-only startContainer property of the AbstractRange interface returns the start Node for the range.
ReadonlystartThe read-only startOffset property of the AbstractRange interface returns the offset into the start node of the range's start position.
The DOM
StaticRangeinterface extends AbstractRange to provide a method to specify a range of content in the DOM whose contents don't update to reflect changes which occur within the DOM tree.MDN Reference