When javascript-ajax transfers data and jumps to the past, it finds that the data is empty.

This is the ajax code {code ...} this is the code controlled by the ci framework {code ...} no id value exists in echo, and no reason can be found .... is it because the data is no longer in the past? I can use another deleted ajax function without redirecting to the Controller. What if I want to transfer data to the Controller and redirect ?... This is the ajax code.

$(".glyphicon-pencil").click(function(){                var id = $(this).attr('rel');        var URL = "
  ";        $.ajax({            type:'post',            url:URL,            data:{"id" : id},            success:function(msg){                window.location.href="
  ";            }        });            });

This is the code controlled by the ci framework.

public function update(){        $id = $this->input->post('id');        echo "$id";        exit;        $thisdata = $this->News_model->getContent($id);        $data['update'] = $this->News_model->getall();        $data['id'] = $thisdata['id'];        $data['title'] = $thisdata['title'];        $data['content'] = $thisdata['content'];        $data['children'] = $thisdata['children'];        $this->load->view('admin/update',$data);    }

No id value exists in echo, and no reason can be found ....
Is it because the data is no longer in the past? I can use another deleted ajax without redirecting to the Controller.
What should I do if I want to transfer data to the Controller and redirect it?
I am confused about this problem when I got started ..

Reply content:

This is the ajax code.

$(".glyphicon-pencil").click(function(){                var id = $(this).attr('rel');        var URL = "
  ";        $.ajax({            type:'post',            url:URL,            data:{"id" : id},            success:function(msg){                window.location.href="
  ";            }        });            });

This is the code controlled by the ci framework.

public function update(){        $id = $this->input->post('id');        echo "$id";        exit;        $thisdata = $this->News_model->getContent($id);        $data['update'] = $this->News_model->getall();        $data['id'] = $thisdata['id'];        $data['title'] = $thisdata['title'];        $data['content'] = $thisdata['content'];        $data['children'] = $thisdata['children'];        $this->load->view('admin/update',$data);    }

No id value exists in echo, and no reason can be found ....
Is it because the data is no longer in the past? I can use another deleted ajax without redirecting to the Controller.
What should I do if I want to transfer data to the Controller and redirect it?
I am confused about this problem when I got started ..

You are not using the returned data, and you will jump directly toupdatePage now

You putwindow.location.href=" ";This sentence is changedalert(msg)Try

Select network debugging for F12 ~~

You have never used your templates and frameworks ~~
" "Can I parse it into a correct url? Is the value of the id passed by the front end blank? Network can be seen