How can you remove all documents from a collection with Mongoose?

DateTime.remove({}, callback) The empty object will match all of them.

.remove() is deprecated. instead we can use deleteMany

DateTime.deleteMany({}, callback).

In MongoDB, the db.collection.remove() method removes documents from a collection. You can remove all documents from a collection, remove all documents that match a condition, or limit the operation to remove just a single document.

Source: Mongodb.

If you are using mongo sheel, just do:

db.Datetime.remove({})

In your case, you need:

You didn't show me the delete button, so this button is just an example:

<a class="button__delete"></a>

Change the controller to:

exports.destroy = function(req, res, next) {    Datetime.remove({}, function(err) {            if (err) {                console.log(err)            } else {                res.end('success');            }        }    );};

Insert this ajax delete method in your client js file:

        $(document).ready(function(){            $('.button__delete').click(function() {                var dataId = $(this).attr('data-id');                if (confirm("are u sure?")) {                    $.ajax({                        type: 'DELETE',                        url: '/',                        success: function(response) {                            if (response == 'error') {                                console.log('Err!');                            }                            else {                                alert('Success');                                location.reload();                            }                        }                    });                } else {                    alert('Canceled!');                }            });        });