js为元素动态添加css代码

 IE：

 

cssStr = "p { color:#FF0000;} a { font-size:9pt;}";
var style = win.document.createStyleSheet();
style.cssText = cssStr;

 

FF：

 

cssStr = "p { color:#FF0000;} a { font-size:9pt;}";
var style = win.document.createElement("style"); 
style.type = "text/css"; 
style.innerHTML = cssStr; 
win.document.getElementsByTagName("HEAD").item(0).appendChild(style);

转载于:https://www.cnblogs.com/samlin/archive/2008/11/06/1328318.html

来源：https://blog.csdn.net/weixin_30919919/article/details/98832604