sweetalert2.github.io do nothing when click in confirm button code example

Example: sweetalert2 email and password

swal({
            title: 'Multiple inputs',
            html:
                '<input id="swal-input1" class="swal2-input">' +
                '<input id="swal-input2" class="swal2-input">',
            preConfirm: function () {
                return new Promise(function (resolve) {
                    // Validate input
                    if ($('#swal-input1').val() == '' || $('#swal-input2').val() == '') {
                        swal.showValidationMessage("Enter a value in both fields"); // Show error when validation fails.
                        swal.enableConfirmButton(); // Enable the confirm button again.
                    } else {
                        swal.resetValidationMessage(); // Reset the validation message.
                        resolve([
                            $('#swal-input1').val(),
                            $('#swal-input2').val()
                        ]);
                    }
                })
            },
            onOpen: function () {
                $('#swal-input1').focus()
            }
        }).then(function (result) {
            // If validation fails, the value is undefined. Break out here.
            if (typeof(result.value) == 'undefined') {
                return false;
            }
            swal(JSON.stringify(result))
        }).catch(swal.noop)