Jquery redirect not saving codeigniter session - codeigniter

Question

I have a register page in which via ajax request i want to redirect the user to the logged in page. But, this particular ajax request does a redirect but doesn't pass on the session after the POST request
var dataString = 'name='+ name + '&email=' + email1 + '&password=' + password1;
//alert (dataString);return false;
$.ajax({
type: "POST",
url: "http://localhost/ci/index.php/login/add/",
data: dataString,
success: function() {
window.location.href = "http://localhost/ci/dashboard";
}
});
The login/add function is taking the values via POST request which then puts these value in session and does a redirect. The same thing is happening perfectly without a ajax request in plain php/CI. But, not happening via ajax request.
Here's the php code if it helps
if ($this->input->post("add") == "Sign up") {
$data_array = array(); //this array contains post data
$output = $this->user_model->add_new($data_array);
if($output == TRUE){
$this->session->set_userdata('logged_in', '1');
}
$data = array(
'name' => form_error('name'),
'email' => form_error('email'),
'password' => form_error('password')
);
echo json_encode($data);
}

Answer 1

The login/add function is taking the values via POST request which then puts these value in session and does a redirect. The same thing is happening perfectly without a ajax request in plain php/CI. But, not happening via ajax request.
It because previously you perform a synchronous request, while with jQuery ajax you are perform asynchronous request(this to say that your javascript is may ignore some part of your PHP script). Try adding async parameter in your ajax and set it to false