行数取得 s2-9s.HTML
 
table1
a a a a
b b b b
c c c c
d d d d
 
table2 
hen1 hen2 hen3
var hen1 = table1.rows.length ;
table2.rows[2].cells[1].innerHTML = hen1 ;
var hen2 = (table1.rows.length) ;
table2.rows[3].cells[2].innerHTML = hen2 ;
var hen = document.getElementById("table1") ;
var hen3 = hen.rows.length ;
table2.rows[4].cells[3].innerHTML = hen3