Retrieve updated chart

Hi guys! I just want to ask if it is possible to save some information in the gantt chart when I set the gantt chart to be editable? Because I am planning to let the user change the date and save it to my database everytime he/she changes it.

Yes, there are events on data changes, also you can generate the whole chart in XML any time you need.
Personally, I do not think it makes sense to save state on each edit - it is an overhead. The user should explicitly press “Save” button instead.

How can I extract data from the chart on a click of a button?
Thank you very much

By the way, I’m using JSP as my programming language

Why don’t you just read the docs? There is a method gantt.getXML(): … zing_chart