Selection of link on single click

i want to show link selected on single click, Could you please help?

Hello,@sweeti!

At first ouy need to add class with styles for selected link.
Use gantt.link_class to do this.
https://docs.dhtmlx.com/gantt/api__gantt_link_class_template.html

To change class of selected link you need to get the id of clicked link.

gantt.attachEvent("onLinkClick", function(id,e){ //any custom logic here });

will help you to do this.
https://docs.dhtmlx.com/gantt/api__gantt_onlinkclick_event.html

Try the following code, it should help you