重定向javascript函数，codeigniter

I have the following function that will show a pop up message, once the user click ok it will navigate the user to the controller called backendBanner and call the function delete_banner.

The link written in html and php looks something like this:

<a href="<?php echo base_url().'backendBanner/delete_banner/'.$banner['banner_path']; ?>">

Code for the button in view to call the function

<td>
      <a onclick="return remove_image($(this));" rel="<?php echo $banner['banner_path']; ?>"><input type="button" class="btn btn-danger" value="Delete"></a>
</td>

Code for the function In this function, $banner['banner_path'] is equal to fullpath

<script>
        function remove_image(img)
        {
            if(confirm('<?php echo lang('confirm_remove_image');?>'))
            {
                var fullpath  = img.attr('rel');
                alert(fullpath);
                redirect(base_url()."backendBanner/delete_banner/"+fullpath);
            }
        }
    </script>

How should I go about bringing the user to the link through the function?

It should be :

window.location="<?php echo base_url().'backendBanner/delete_banner/'.$banner['banner_path']; ?>" + fullpath

The problem in your JS code is that you're using redirect(). This will not work because redirect() is a PHP/Codeigniter function, not JS.

Use window.location instead.

Assuming that the function base_url() it's a valid function created by you...

Try with:

location.href = base_url() + img.attr('rel');

Note: Try to use some templating engine like twig, blade etc.