如何在ajax成功块中重定向到下一页

Question

I want to redirect to admin_dashboard page in ajax.I call a function in button tag and want to redirect to next page in success response.value gets deleted perfectly but my problem is "Deleted Successfully" message is not returned and not redirect to admin_dashboard.php page. instaed of '1' in function I used dynamic valued.for sample I used '1' myFunction(1).I caught an error in console.

HTML

<button style="margin-left:10px;" name="delete" onclick="myFunction(1);">Delete</button>

Script

function myFunction(del) {

    var rmvfile = del;

    if (confirm("Are you sure you want to Delete the file?") == true) {
        if (del != '') {
            $.ajax({
                type: 'post',
                url: 'query9.php',
                data: {
                    rmvfile: rmvfile
                },
                success: function(msg) {
                    window.location.href = 'admin_dashboard.php';
                }
            });
        }
    }
}

my php query page

 <?php
 include "config.php";
 $s=$_POST['rmvfile'];  
 $del="delete from requirement where req_id='$s'";
 if($del1=mysql_query($del))
 {
     echo 'Deleted Successfully';
 }

Answer 1

Try below code in your php script:

<?php
 include "config.php";
 $s=$_POST['rmvfile'];  
 $del="delete from requirement where req_id='$s'";
 if( mysql_query($del) )
{
echo 'Deleted Successfully';
 }