问题是点击锚元素有一个默认行为。

<div class="delete">
   <a onclick="confirmation(event)" href="'.URLROOT.'/dashboards/delete_note/'.htmlspecialchars($note->note_id).'/'.$data['table'] .'">
     <i class="far fa-trash-alt"></i>
  </a>
</div>

和在js中

function confirmation(ev) {
ev.preventDefault();
var urlToRedirect = ev.currentTarget.getAttribute('href'); //use currentTarget because the click may be on the nested i tag and not a tag causing the href to be empty
console.log(urlToRedirect); // verify if this is the right URL
swal({
  title: "Are you sure?",
  text: "Once deleted, you will not be able to recover this imaginary file!",
  icon: "warning",
  buttons: true,
  dangerMode: true,
})
.then((willDelete) => {
  // redirect with javascript here as per your logic after showing the alert using the urlToRedirect value
  if (willDelete) {
    swal("Poof! Your imaginary file has been deleted!", {
      icon: "success",
    });
  } else {
    swal("Your imaginary file is safe!");
  }
});
}

可以在href属性中添加值javascript:，如下所示

<a href = 'javascript:
    swal({
  title: "Delete selected item?",
  text: "Unrecoverable Data",
  icon: "warning",
  buttons: true,
  dangerMode: "true",
})
.then((willDelete) => {
  if (willDelete) {
   swal({ title: "Delete Data Successfully",
 icon: "success"}).then(okay => {
   if (okay) {
    window.location.href = "";
  }
});
    
  } else {
    swal({
    title: "Data Not Deleted",
     icon: "error",
    
    });
  }
});'
class = "btn btn-danger">Delete</a>

尝试从链接中删除href，并且仅在用户单击SweetAlert脚本中的“确认”时处理链接。

<div class="delete"><a onclick="return confirmation()"><i class="far fa-trash-alt"></i></a></div>

在您的javascript中：

function confirmation() {
swal({
  title: "Are you sure?",
  text: "Once deleted, you will not be able to recover this imaginary file!",
  icon: "warning",
  buttons: true,
  dangerMode: true,
})
.then((willDelete) => {
  if (willDelete) {

    // TODO: Handle your delete url by ajax
    // ...

    swal("Poof! Your imaginary file has been deleted!", {
      icon: "success",
    });
  } else {
    swal("Your imaginary file is safe!");
  }
});