JavaScript 操作table，可以新增行和列并且隔一行换背景色(2)

             
            var add = document.getElementById("add"); 
            add.onclick = function() { 
                n = n+1; 
                if (n%2==0) { 
                    bg = '#F4FAC7'; 
                } else { 
                    bg = 'white';    
                } 
                var table = document.getElementById("table"); 
                var tr = document.createElement("tr"); 
                tr.bgColor = bg; 
                var td = document.createElement("td"); 
                td.innerHTML = '第'+(10+n)+'行'; 
                tr.appendChild(td); 
                table.appendChild(tr); 
            } 
        </script> 
    </body> 
</html> 

摘自 Lee.的专栏