The Document.createRange() method returns a new Range object whose start and end are offset 0 of the Document object on which it was called.
createRange()None.
The created Range object.
const range = document.createRange();
range.setStart(startNode, startOffset);
range.setEnd(endNode, endOffset);Once a Range is created, you need to set its boundary points before you can make use of most of its methods.