OrgChartJS Docs

Links

There are 3 different types of links

Rounded link Curve link Edge link

Link Labels

Link binding in OrgChart JS maps node data to link labels:

 
    var chart = new OrgChart(document.getElementById("tree"), {
         linkBinding: {
             link_field_0: "createdAt"
         },
         nodes: [
                { id: "1" },
                { id: "2", pid: "1", createdAt: "Since 08/08/2018" },
                { id: "3", pid: "1", createdAt: "Since 05/04/2018" }
         ]
    }); 
 

Using the label event you can change the link labels: