Toggles the collapsed state of a form's group. Returns undefined.

Description

This method will toggle the collapsed/expanded state of a group if show is not set. If show is, the group will be collapsed/expanded based on the value of show. If you have form defined in the following way: let form = new w2form({ name : 'form', url : 'server/post', fields: [ { field: 'first_name', type: 'text', html: { group: 'General', groupCollapsible: true, page: 0, column: 0, label: 'First Name', span: 4 } }, { field: 'last_name', type: 'text', html: { page: 0, column: 0, label: 'Last Name', span: 4 } }, { field: 'middle_name', type: 'text', html: { page: 0, column: 0, label: 'Middle Name', span: 4 } } ] }); You can do: // toggle collapsed/expanded state of the group based on the current state w2ui.form.toggleGroup('General'); // collapse the group w2ui.form.toggleGroup('General', false); // expand the group w2ui.form.toggleGroup('General', true);