script放在input之后<input runat="server" type="hidden" id="cssname" name="csstest"/>
<script language="javascript" type="text/javascript" >
if (window.screen.width <= 1024) {
document.getElementById("cssname").value = "1024.css";
}
else {
document.getElementById("cssname").value= "大版.css";
}
</script>
<script language="javascript" type="text/javascript" >
if (window.screen.width <= 1024) {
document.getElementById("cssname").value = "1024.css";
}
else {
document.getElementById("cssname").value= "大版.css";
}
</script>
用"<%=cssname.ClientID%>"
先运行页面,然后鼠标右键点击查看源代码,找到input的ID