JavaScript实现类似Excel功能

//复制所选表格的数据到剪贴板 作者：xx
function copyData(){
var content = "";
var tbl = getTbl();
//获取所选的所有数据
for(j = start_Row; j <= end_Row; j++)
{
for(i = start_Col; i <= end_Col; i++)
{
content += (tbl.rows[j].cells[i].childNodes[0].value);
if(i != end_Col) content += String.fromCharCode(9);
}

content += "\n";
}
try
{
//赋值到剪贴板
clipboardData.setData('text',content);
}catch(e)
{
alert('error:' + e);
}
}