Serializing Data into XML and JSON

JSON format

To serialize data from a Gantt chart into a JSON object, use the serialize method as in:

const json = gantt.serialize();

As a result, the json variable from the code above will look something like this:

{
    "data": [{ "id": "1", "text": "Project #1", "start_date": "01-04-2026 00:00", ...}, ...], 
    "links":[{ "id": "1", "source": "1", "target": "2", "type": "1" }, ...]
}

XML format

To serialize data from a Gantt chart into an XML string, use the serialize method as in:

const xml = gantt.serialize("xml");

As a result, the xml variable from the code above will look something like this:

<data>
    <task id='11' parent=''   start_date='01-04-2026 00:00' duration='11' 
     open='true' progress='0.6' end_date='12-04-2026 00:00'>
        <![CDATA[Project #1]]>
    </task>
    <task id='12' parent='11' start_date='03-04-2026 00:00' duration='5' 
     open='true' progress='1' end_date='08-04-2026 00:00'>
        <![CDATA[Task #1]]>
    </task>
</data>

note

Serialization to old (dhtmlxGantt <2.0) XML format is not available