now,i know,in the nestedheaders,i can use colspan property,but is not allowed with using rowspan property,What should I do to merge the rows in the nestedheaders?
we haven’t added
rowspan feature yet. This topic was raised here https://github.com/handsontable/handsontable/issues/191 and will be reopened once we’d be able to develop.
I will message you as soon as we get any updates on that topic.