if(!username){
dialog.error('用户名不能为空');
}else if(!password){
dialog.error('密码不能为空');
}else{
var url="/aaaaaaaaaaaapb/index.php/admin/login/check";
var data={"username":username,"password":password};
//执行异步请求
$.post(url,data,function(result){
//print_r($_POST);
});
}