<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
#XXX{
width:100px;
height:50px;
}
#XXX.XXX_change {
width:200px;
height:100px;
}
div{ border:double 1px red}
</style>
</head><body>
<div id="XXX"><a href="#1" onclick="ff()">点击我</a></div>
</body>
</html>
<script type="text/javascript">
function ff(){
document.getElementById("XXX").className="XXX_change";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
#XXX{
width:100px;
height:50px;
}
#XXX.XXX_change {
width:200px;
height:100px;
}
div{ border:double 1px red}
</style>
</head><body>
<div id="XXX"><a href="#1" onclick="ff()">点击我</a></div>
</body>
</html>
<script type="text/javascript">
function ff(){
document.getElementById("XXX").className="XXX_change";
}
</script>
#a{
width:200px;
...
}
#a.change{
width:100px;
}最终的样式是这样:
#a{
width:100px;
...这些保持不变
}
$("a").addClass('change')
也可以用以下函数function addClassName(ele,value){
if(!ele.className){
ele.className = value;
}else{
var newClassName=ele.className;
newClassName+= " ";
newClassName+= value;
ele.className=newClassName;
}
}