Empty Slick Grid with add/remove row and a "Return All Data From The SlickGrid Function"

[Leonardo Resende Correa Lima]

I have this code that creates an empty Slick Grid with the possibility to add new rows onAddNewRow and to delete the row by clicking in the last cell onClick.Subscribe

I have 3 questions:

1. Is there a method to save the grid data using the api, for example returning a JSON?
   
2. Is there a method to, for example, when a save button is clicked, to remove the class "editable"from the cell and save the value in the cell, so later I can get this values an transforming in a JSON ?
3. Is there a way to validate the type of value inserted in the cell, like string or only integer?

        var grid;

        var data = [];

        var columns = [

          { id: "quantidade", name: "Quantidade", field: "Quantidade", width: 30, editor: Slick.Editors.Text },

          { id: "dimensao", name: "Dimensão", field: "Dimensao", width: 30, editor: Slick.Editors.Text },

          { id: "peso", name: "Peso", field: "Peso", width: 30, editor: Slick.Editors.Text },

          { id: "acao", name: "Ação", field: "Acao", width: 30, formatter: botaoRemoverFormatter, cssClass: "slick-align-center" },

        ];

        var options = {

            editable: true,

            enableAddRow: true,

            enableCellNavigation: true,

            enableColumnReorder: false,

            asyncEditorLoading: false,

        };

        grid = new Slick.Grid("#GridDetalhesCargaNovaRT", data, columns, options);

        grid.autosizeColumns();

        grid.onAddNewRow.subscribe(function (e, args) {

            var item = args.item;

            var column = args.column;

            grid.invalidateRow(data.length);

            data.push(item);

            grid.updateRowCount();

            grid.autosizeColumns();

            grid.render();

        });

        grid.onClick.subscribe(function (e, args) {

            if (args.cell == "3") {

                var linhaAtual = args.row;

                if (confirm("Deseja excluir esta linha?")) {

                    var gridData = grid.getData();

                    gridData.splice(linhaAtual, 1);

                    while (linhaAtual < gridData.length) {

                        grid.invalidateRow(linhaAtual);

                        linhaAtual++;

                    }

                    grid.updateRowCount();

                    grid.autosizeColumns()

                    grid.render();

                }

            }

        });