easyui checkbox

formatter: function (value) {
                    if (String(value) == "1") {
                        return '<span class="icon icon-enable"></span>';
                    }
                    else if (String(value) == "0") {
                        return '<span class="icon icon-disable"></span>';
                    }
                },
editor: {
                    type: 'checkbox',
                    options: {
                        on: 1,
                        off: 0
                    }
                }