The HTMLTableElement.rows read-only property returns a live HTMLCollection of all the rows in the table. The rows included in the associated <thead>, <tfoot> and <tbody> elements.
Although the property is read-only, the returned object is live and allows the modification of its content.
Syntax
HTMLCollectionObject = table.rows
Example
myrows = mytable.rows; firstRow = mytable.rows[0]; lastRow = mytable.rows[mytable.rows.length-1];