遍历td
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title> new document </title> <meta name="generator" content="editplus" /> <meta name="author" content="yixianggao@126.com" /> <meta name="keywords" content="" /> <meta name="description" content="" /></head><body><div> <table id="tb"> <tr><td>123</td></tr> <tr><td>456</td></tr> <tr><td>789</td></tr> </table></div><script type="text/javascript"><!--var target = document.getElementById("tb");var cell;for (var i=0; i<target.cells.length; i++){ cell = target.cells; cell.style.color = "white"; cell.style.backgroundColor = "black";}//--></script></body></html>
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