http://www.cnblogs.com/xiaoluo501395377/archive/2012/10/18/2730073.html
<script type="text/javascript">
function validate() {
var page = document.getElementsByName("page")[0].value;
if(page > <s:property value="#request.pageBean.totalPage"/>) {
alert("你输入的页数大于最大页数,页面将跳转到首页!");
window.document.location.href = "personAction";
return false;
}
return true;
}
</script>
<form action="personAction" onsubmit="return validate();">
<font size="4">跳转至</font> <input type="text" size="2" name="page">页
<input type="submit" value="跳转">
</form>