我有一个注册帐户的代码。我希望在表单提交和页面重新加载之前显示成功警报，或者在表单成功提交后弹出成功警报。
我尝试了这段代码，我它只是提交表单并重新加载页面，但警报没有出现。
`

if ($password == $cpassword) {
   $query1 = mysqli_query($connections, $query);
     if ($query1){
      echo "
           <script type='text/javascript'>setTimeout(function () { 
                Swal.fire({
                  title: 'Success!',
                  icon: 'success',
                  text: 'Account registered!',
                  allowOutsideClick: true,
                  allowEscapeKey: true,
                  allowEnterKey: false,
                  showConfirmButton: false,
                  }); 
                },100) </script>";
              }
              
        echo "<script>window.location.href='accounts.php'</script>";
  }

`
我还尝试了另一个代码，警报工作，但表单提交两次

if ($password == $cpassword) {
              mysqli_query($connections, $query);
              echo "
              <script type='text/javascript'>setTimeout(function () { 
                Swal.fire({
                  title: 'Success!',
                  icon: 'success',
                  text: 'Account registered!',
                  allowOutsideClick: true,
                  allowEscapeKey: true,
                  allowEnterKey: false,
                  showConfirmButton: false,
                  }); 
                  },100)
                  window.setTimeout(function(){ 
                    if(!window.location.hash) {
        window.location = window.location + '#loaded';
        window.location.reload();
    }
                    } ,100);
                    </script>";
                  }