1、<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN媪青怍牙" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>访问外部样式表</title><script type="text/javascript"> function changeBackgroundColor() { //这儿如何写访问外部样式表中代码(比如:.special中的border值) }</script><link href="default.css" rel="stylesheet" type="text/css" /></head><body><div id="div1" class="special"></div><input type="button" value="Change Background Color" onclick="changeBackgroundColor()" /></body></html>
2、使用window.getComputedStyle('')
3、window也可以去掉