我想不出哪里出了问题！当我选中复选框时，它会删除数据，但不显示模式，当我按下复选框选中的按钮时，它会显示模式！你知道吗？

if (isset($_POST['delete'])) {
    echo "<script type='text/javascript'>
    $(document).ready(function(){
        $('#id02').modal('show');";
        echo "$('.delete2').click(function(){";
            foreach ($_POST['checkbox'] as $checkbox ){
                $sql = "DELETE FROM `uploading` WHERE id=$checkbox";
                if(mysqli_query($con,$sql)){
                    header("location:read.php");
                }
            }
        echo  "});
    });</script>";
}