HTMLTableElement: rows property
  The read-only HTMLTableElement
  property rows returns a live
  HTMLCollection of all the rows in the table, including the rows
  contained within any <thead>, <tfoot>, and
  <tbody> elements.
Although the property itself is read-only, the returned object is live and allows the modification of its content.
Value
  An HTMLCollection providing a live-updating list of the
  HTMLTableRowElement objects representing all of the <tr>
  elements contained in the table. This provides quick access to all of the table rows,
  without having to manually search for them.
Examples
js
myrows = mytable.rows;
firstRow = mytable.rows[0];
lastRow = mytable.rows.item(mytable.rows.length - 1);
  This demonstrates how you can use both indexed access and the
  HTMLCollection.item() method to obtain individual rows in the
  table.
Specifications
| Specification | 
|---|
| HTML Standard # dom-table-rows-dev | 
Browser compatibility
BCD tables only load in the browser